21988

Number 21988 is an even five-digits composite number and natural number following 21987 and preceding 21989.

Properties of the number 21988

Nominal	21988
Cardinal	twenty-one thousand nine hundred eighty-eight
Cardinal twenty-one thousand nine hundred eighty-eight
Ordinal	21,988th
Number of digits	5
Sum of digits	28
Product of digits	1152
Number parity	Even

Previous number is 21987

Next number is 21989

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Prime Factorization of 21988

Prime factorization	2 x 2 x 23 x 239
Prime factorization in exponent form	2² x 23 x 239
Prime factors	2, 23, 239
Number of distinct prime factors ω(n)	3
Total number of prime factors Ω(n)	4
Sum of prime factors	264
Product of prime factors	10994

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Divisors of 21988

List of proper divisors	1, 2, 4, 23, 46, 92, 239, 478, 956, 5497, 10994
List of all dividers	1, 2, 4, 23, 46, 92, 239, 478, 956, 5497, 10994, 21988
Number of divisors d(n)	12
Sum of all divisors σ(n)	40320
Aliquot sum	18332
21988 is a deficient number , since it is larger than the sum of its proper divisors (18332). Its deficiency is 3656.

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Prime numbers

Is 21988 a prime number?	No
Is 21988 a semiprime number?	No
Is 21988 a Chen prime number?	No
Is 21988 a Mersenne prime number?	No

Previous prime is 21977

Next prime is 21991

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Sequences

Is 21988 a Catalan number?	No
Is 21988 a Fibonacci number?	No
Is 21988 a Idoneal number?	No

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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.

21988 is not a Happy number

21988 is not a Humble number

21988 is not a Münchhausen number

21988 is not a Perfect number

21988 is not a Perfect square

21988 is not a Palindrome

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Numeric Bases of 21988

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.

Base	System	Value
2	Binary	101010111100100₂
3	Ternary	1010011101₃
4	Quaternary	11113210₄
5	Quinary	1200423₅
6	Senary	245444₆
7	Septenary	121051₇
8	Octal	52744₈
9	Nonary	33141₉
10	Decimal	21988
12	Duodecimal	10884₁₂
16	Hexadecimal	55e4₁₆
20	Vigesimal	2ej8₂₀
36	Base36	gys₃₆
60	Sexagesimal	66S₆₀

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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.

Square of 21988 (n²)	483472144
Cube of 21988 (n³)	10630585502272
Square root of 21988	148.28351223248
Natural Logarithm (ln) of 21988	9.9982521289806
Decimal Logarithm (log) of 21988	4.3421857282937

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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.

Sine of 21988	0.006982418224637
Cosecant of 21988	143.21685808959
Cosine of 21988	-0.99997562262074
Secant of 21988	-1.0000243779735
Tangent of 21988	-0.0069825884418437
Cotangent of 21988	-143.21336683792

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Number parity

Parity is the property of an integer of whether it is even or odd.

Is 21988 an Even Number?

Yes, the number 21988 is an even number.

Is 21988 an Odd Number?

Previous even number is 21986

Next even number is 21990

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Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".

The spelling of 21988 in words is "twenty-one thousand nine hundred eighty-eight", meaning that:

21988 is not an aban number (as it contains the letter a)

21988 is not an eban number (as it contains the letter e)

21988 is not an iban number (as it contains the letter i)

21988 is not an oban number (as it contains the letter o)

21988 is not a tban number (as it contains the letter t)

21988 is not an uban number (as it contains the letter u)

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Numeral systems

How to write 21988 in other number systems?

Bengali numerals	২১৯৮৮
Eastern Arabic numerals	٢١٬٩٨٨
Hieroglyphs numeralsused in Ancient Egypt	𓂭𓂭𓆼𓍪𓎍𓐁
Khmer numerals	២១៩៨៨
Japanese numerals	二万千九百八十八
Roman numerals	n/a
Thai numerals	๒๑๙๘๘

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Translation

How do you say 21988 in 38 different languages?

Arabic	واحد و عشرون ألف و تسعة مائة و ثمانية و ثمانون
Croatian	dvadeset i jedna tisuća devetsto osamdeset i osam
Czech	dvacet jedna tisíc devět set osmdesát osm
Danish	en og tyve tusinde ni hundrede otte og firs
Dutch	éénentwintigduizend negenhonderdachtentachtig
Estonian	akpe blaeve vɔ ɖekɛ alafa asieke blaenyi vɔ enyi
Faroese	tjúgoeitt tusin og níggjuhundraðogáttatiátta
Filipino	dalawáng pû’t isáng libó’t siyám na daán at walóng pû’t waló
Finnish	kaksikymmentäyksituhattayhdeksänsataakahdeksankymmentäkahdeksan
French	vingt et un mille neuf cent quatre-vingt-huit
Greek	είκοσι μία χίλιάδες εννιακόσια ογδόντα οκτώ
German	einundzwanzigtausendneunhundertachtundachtzig
Hebrew	עשרים ואחד אלף תשע מאות שמונים ושמונה
Hindi	इक्कीस हज़ार नौ सौ अट्ठासी
Hungarian	huszonegyezerkilencszáznyolcvannyolc
Icelandic	tuttugu og eitt þúsund og níuhundrað og áttatíu og átta
Indonesian	dua puluh satu ribu sembilan ratus delapan puluh delapan
Italian	ventunomilanovecentoottantotto
Japanese	二万千九百八十八
Korean	이만 천구백팔십팔
Latvian	divdesmit viens tūkstoši deviņsimt astoņdesmit astoņi
Lithuanian	dvidešimt vienas tūkstantis devyni šimtai aštuoniasdešimt aštuoni
Norwegian	tjueett tusen ni hundre og åttiåtte
Persian	بیست و یک هزار و نهصد و هشتاد و هشت
Polish	dwadzieścia jeden tysięcy dziewięćset osiemdziesiąt osiem
Portuguese	vinte e um mil novecentos e oitenta e oito
Romanian	douăzeci şi una mii nouă sute optzeci şi opt
Russian	двадцать одна тысяча девятьсот восемьдесят восемь
Serbian	двадесет и једна хиљада деветсто осамдесет и осам
Slovak	dvadsaťjedna tisíc deväťsto osemdesiatosem
Slovene	dvaset ena tisuću devetsto osemdeset osem
Spanish	veintiún mil novecientos ochenta y ocho
Swahili	elfu ishirini na moja, mia tisa na themanini na nane
Swedish	tjugoentusenniohundraåttioåtta
Thai	สองหมื่นหนึ่งพันเก้าร้อยแปดสิบแปด
Turkish	yirmi bir bin dokuz yüz seksen sekiz
Ukrainian	двадцять одна тисяча девʼятсот вісімдесят вісім
Vietnamese	hai mươi mốt nghìn chín trăm tám mươi tám

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Miscellaneous

Number 21988 reversed	88912
Unicode Character	U+55E4	嗤
Unix Timestamp	Thu, 01 Jan 1970 06:06:28 +0000

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