21688

Number 21688 is an even five-digits composite number and natural number following 21687 and preceding 21689.

Properties of the number 21688

Nominal	21688
Cardinal	twenty-one thousand six hundred eighty-eight
Cardinal twenty-one thousand six hundred eighty-eight
Ordinal	21,688th
Number of digits	5
Sum of digits	25
Product of digits	768
Number parity	Even

Previous number is 21687

Next number is 21689

Calculation was done in 0.0000338554 seconds

Prime Factorization of 21688

Prime factorization	2 x 2 x 2 x 2711
Prime factorization in exponent form	2³ x 2711
Prime factors	2, 2711
Number of distinct prime factors ω(n)	2
Total number of prime factors Ω(n)	4
Sum of prime factors	2713
Product of prime factors	5422

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Divisors of 21688

List of proper divisors	1, 2, 4, 8, 2711, 5422, 10844
List of all dividers	1, 2, 4, 8, 2711, 5422, 10844, 21688
Number of divisors d(n)	8
Sum of all divisors σ(n)	40680
Aliquot sum	18992
21688 is a deficient number , since it is larger than the sum of its proper divisors (18992). Its deficiency is 2696.

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Prime numbers

Is 21688 a prime number?	No
Is 21688 a semiprime number?	No
Is 21688 a Chen prime number?	No
Is 21688 a Mersenne prime number?	No

Previous prime is 21683

Next prime is 21701

Calculation was done in 0.0016191006 seconds

Sequences

Is 21688 a Catalan number?	No
Is 21688 a Fibonacci number?	No
Is 21688 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.

21688 is not a Happy number

21688 is not a Humble number

21688 is not a Münchhausen number

21688 is not a Perfect number

21688 is not a Perfect square

21688 is not a Palindrome

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Numeric Bases of 21688

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	101010010111000₂
3	Ternary	1002202021₃
4	Quaternary	11102320₄
5	Quinary	1143223₅
6	Senary	244224₆
7	Septenary	120142₇
8	Octal	52270₈
9	Nonary	32667₉
10	Decimal	21688
12	Duodecimal	10674₁₂
16	Hexadecimal	54b8₁₆
20	Vigesimal	2e48₂₀
36	Base36	gqg₃₆
60	Sexagesimal	61S₆₀

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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 21688 (n²)	470369344
Cube of 21688 (n³)	10201370332672
Square root of 21688	147.26846234004
Natural Logarithm (ln) of 21688	9.9845143911785
Decimal Logarithm (log) of 21688	4.3362195045724

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Trigonometry

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

Sine of 21688	-0.99988575631103
Cosecant of 21688	-1.0001142567421
Cosine of 21688	0.015115367224302
Secant of 21688	66.157836932483
Tangent of 21688	-66.150278817138
Cotangent of 21688	-0.015117094256917

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Number parity

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

Is 21688 an Even Number?

Yes, the number 21688 is an even number.

Is 21688 an Odd Number?

Previous even number is 21686

Next even number is 21690

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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 21688 in words is "twenty-one thousand six hundred eighty-eight", meaning that:

21688 is not an aban number (as it contains the letter a)

21688 is not an eban number (as it contains the letter e)

21688 is not an iban number (as it contains the letter i)

21688 is not an oban number (as it contains the letter o)

21688 is not a tban number (as it contains the letter t)

21688 is not an uban number (as it contains the letter u)

Calculation was done in 0.0000030994 seconds

Numeral systems

How to write 21688 in other number systems?

Bengali numerals	২১৬৮৮
Eastern Arabic numerals	٢١٬٦٨٨
Hieroglyphs numeralsused in Ancient Egypt	𓂭𓂭𓆼𓍧𓎍𓐁
Khmer numerals	២១៦៨៨
Japanese numerals	二万千六百八十八
Roman numerals	n/a
Thai numerals	๒๑๖๘๘

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Translation

How do you say 21688 in 38 different languages?

Arabic	واحد و عشرون ألف و ستة مائة و ثمانية و ثمانون
Croatian	dvadeset i jedna tisuća šeststo osamdeset i osam
Czech	dvacet jedna tisíc šest set osmdesát osm
Danish	en og tyve tusinde seks hundrede otte og firs
Dutch	éénentwintigduizend zeshonderdachtentachtig
Estonian	akpe blaeve vɔ ɖekɛ alafa ade blaenyi vɔ enyi
Faroese	tjúgoeitt tusin og sekshundraðogáttatiátta
Filipino	dalawáng pû’t isáng libó’t anim na daán at walóng pû’t waló
Finnish	kaksikymmentäyksituhattakuusisataakahdeksankymmentäkahdeksan
French	vingt et un mille six cent quatre-vingt-huit
Greek	είκοσι μία χίλιάδες εξακόσια ογδόντα οκτώ
German	einundzwanzigtausendsechshundertachtundachtzig
Hebrew	עשרים ואחד אלף שש מאות שמונים ושמונה
Hindi	इक्कीस हज़ार छह सौ अट्ठासी
Hungarian	huszonegyezerhatszáznyolcvannyolc
Icelandic	tuttugu og eitt þúsund og sexhundrað og áttatíu og átta
Indonesian	dua puluh satu ribu enam ratus delapan puluh delapan
Italian	ventunomilaseicentoottantotto
Japanese	二万千六百八十八
Korean	이만 천육백팔십팔
Latvian	divdesmit viens tūkstoši sešsimt astoņdesmit astoņi
Lithuanian	dvidešimt vienas tūkstantis šeši šimtai aštuoniasdešimt aštuoni
Norwegian	tjueett tusen seks hundre og åttiåtte
Persian	بیست و یک هزار و ششصد و هشتاد و هشت
Polish	dwadzieścia jeden tysięcy sześćset osiemdziesiąt osiem
Portuguese	vinte e um mil seiscentos e oitenta e oito
Romanian	douăzeci şi una mii şase sute optzeci şi opt
Russian	двадцать одна тысяча шестьсот восемьдесят восемь
Serbian	двадесет и једна хиљада шестсто осамдесет и осам
Slovak	dvadsaťjedna tisíc šesťsto osemdesiatosem
Slovene	dvaset ena tisuću šesto osemdeset osem
Spanish	veintiún mil seiscientos ochenta y ocho
Swahili	elfu ishirini na moja, mia sita na themanini na nane
Swedish	tjugoentusensexhundraåttioåtta
Thai	สองหมื่นหนึ่งพันหกร้อยแปดสิบแปด
Turkish	yirmi bir bin altı yüz seksen sekiz
Ukrainian	двадцять одна тисяча шістсот вісімдесят вісім
Vietnamese	hai mươi mốt nghìn sáu trăm tám mươi tám

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Miscellaneous

Number 21688 reversed	88612
Unicode Character	U+54B8	咸
Unix Timestamp	Thu, 01 Jan 1970 06:01:28 +0000

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