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21918

Number 21918 is an even five-digits composite number and natural number following 21917 and preceding 21919.

Properties of the number 21918

Nominal21918
Cardinaltwenty-one thousand nine hundred eighteen
Cardinal
twenty-one thousand nine hundred eighteen
Ordinal21,918th
Number of digits5
Sum of digits21
Product of digits144
Number parityEven
Calculation was done in 0.0000457764 seconds

Prime Factorization of 21918

Prime factorization2 x 3 x 13 x 281
Prime factors2, 3, 13, 281
Number of distinct prime factors ω(n)4
Total number of prime factors Ω(n)4
Sum of prime factors299
Product of prime factors21918
Calculation was done in 0.0000710487 seconds

Divisors of 21918

List of proper divisors 1, 2, 3, 6, 13, 26, 39, 78, 281, 562, 843, 1686, 3653, 7306, 10959
List of all dividers1, 2, 3, 6, 13, 26, 39, 78, 281, 562, 843, 1686, 3653, 7306, 10959, 21918
Number of divisors d(n)16
Sum of all divisors σ(n)47376
Aliquot sum 25458
21918 is an abundant number , because the sum of its proper divisors (25458) is greater than itself. Its abundance is 3540.
Calculation was done in 0.0000329018 seconds

Prime numbers

Is 21918 a prime number?No
Is 21918 a semiprime number?No
Is 21918 a Chen prime number?No
Is 21918 a Mersenne prime number?No
Calculation was done in 0.0115311146 seconds

Sequences

Is 21918 a Catalan number?No
Is 21918 a Fibonacci number?No
Is 21918 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.
21918 is not a Happy number
21918 is not a Humble number
21918 is not a Münchhausen number
21918 is not a Perfect number
21918 is not a Perfect square
21918 is not a Palindrome
Calculation was done in 0.0124609470 seconds

Numeric Bases of 21918

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.
BaseSystemValue
2Binary1010101100111102
3Ternary10100012103
4Quaternary111121324
5Quinary12001335
6Senary2452506
7Septenary1206217
8Octal526368
9Nonary330539
10Decimal21918
12Duodecimal1082612
16Hexadecimal559e16
20Vigesimal2efi20
36Base36gwu36
60Sexagesimal65I60
Calculation was done in 0.0000250340 seconds

Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 21918 (n2)480398724
Cube of 21918 (n3)10529379232632
Square root of 21918148.04728974216
Natural Logarithm (ln) of 219189.9950634960233
Decimal Logarithm (log) of 219184.3408009225956
Calculation was done in 0.0000059605 seconds

Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 219180.77829391567688
Cosecant of 219181.2848616439848
Cosine of 21918-0.62790013602511
Secant of 21918-1.5926099432474
Tangent of 21918-1.239518628876
Cotangent of 21918-0.80676480103153
Calculation was done in 0.0000090599 seconds

Number parity

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

Is 21918 an Even Number?

Yes, the number 21918 is an even number.

Is 21918 an Odd Number?

No
Calculation was done in 0.0000059605 seconds

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 21918 in words is "twenty-one thousand nine hundred eighteen", meaning that:
21918 is not an aban number (as it contains the letter a)
21918 is not an eban number (as it contains the letter e)
21918 is not an iban number (as it contains the letter i)
21918 is not an oban number (as it contains the letter o)
21918 is not a tban number (as it contains the letter t)
21918 is not an uban number (as it contains the letter u)
Calculation was done in 0.0000030994 seconds

Numeral systems

How to write 21918 in other number systems?
Bengali numerals২১৯১৮
Eastern Arabic numerals٢١٬٩١٨
Hieroglyphs numeralsused in Ancient Egypt𓂭𓂭𓆼𓍪𓎆𓐁
Khmer numerals២១៩១៨
Japanese numerals二万千九百十八
Roman numeralsn/a
Thai numerals๒๑๙๑๘
Calculation was done in 0.0001459122 seconds

Translation

How do you say 21918 in 38 different languages?
Arabicواحد و عشرون ألف و تسعة مائة و ثمانية عشر
Croatiandvadeset i jedna tisuća devetsto osamnaest
Czechdvacet jedna tisíc devět set osmnáct
Danish en og tyve tusinde ni hundrede atten
Dutchéénentwintigduizend negenhonderdachttien
Estonianakpe blaeve vɔ ɖekɛ alafa asieke kple wuienyi
Faroesetjúgo­eitt tusin og níggju­hundrað­og­átjan
Filipinodalawáng pû’t isáng libó’t siyám na daán at labíng-waló
Finnishkaksi­kymmentä­yksi­tuhatta­yhdeksän­sataa­kahdeksantoista
Frenchvingt et un mille neuf cent dix-huit
Greekείκοσι μία χίλιάδες εννιακόσια δεκα­οκτώ
Germanein­und­zwanzig­tausend­neun­hundert­achtzehn
Hebrewעשרים ואחד אלף תשע מאות ושמונה עשרה
Hindiइक्कीस हज़ार नौ सौ अठारह
Hungarianhuszon­egy­ezer­kilenc­száz­tizen­nyolc
Icelandictuttugu og eitt þúsund og níu­hundrað og átján
Indonesiandua puluh satu ribu sembilan ratus delapan belas
Italianventunomilanovecentodiciotto
Japanese二万千九百十八
Korean이만 천구백십팔
Latviandivdesmit viens tūkstoši deviņsimt astoņpadsmit
Lithuaniandvidešimt vienas tūkstantis devyni šimtai aštuoniolika
Norwegiantjue­ett tusen ni hundre og atten
Persianبیست و یک هزار و نهصد و هجده
Polishdwadzieścia jeden tysięcy dziewięćset osiemnaście
Portuguesevinte e um mil novecentos e dezoito
Romaniandouăzeci şi una mii nouă sute optsprezece
Russianдвадцать одна тысяча девятьсот восемнадцать
Serbianдвадесет и једна хиљада деветсто осамнаест
Slovakdvadsať­jedna tisíc deväť­sto osemnásť
Slovenedvaset ena tisuću devetsto asemnajst
Spanish veintiún mil novecientos dieciocho
Swahilielfu ishirini na moja, mia tisa na kumi na nane
Swedishtjugoentusenniohundraarton
Thaiสอง​หมื่น​หนึ่ง​พัน​เก้า​ร้อย​สิบ​แปด
Turkishyirmi bir bin dokuz yüz on sekiz
Ukrainianдвадцять одна тисяча девʼятсот вісімнадцять
Vietnamesehai mươi mốt nghìn chín trăm mười tám
Calculation was done in 0.0238678455 seconds

Miscellaneous

Number 21918 reversed81912
Unicode CharacterU+559E
Unix TimestampThu, 01 Jan 1970 06:05:18 +0000
Calculation was done in 0.0000340939 seconds
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