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21387

Number 21387 is an odd five-digits composite number and natural number following 21386 and preceding 21388.

Properties of the number 21387

Nominal21387
Cardinaltwenty-one thousand three hundred eighty-seven
Cardinal
twenty-one thousand three hundred eighty-seven
Ordinal21,387th
Number of digits5
Sum of digits21
Product of digits336
Number parityOdd
Calculation was done in 0.0000300407 seconds

Prime Factorization of 21387

Prime factorization3 x 7129
Prime factors3, 7129
Number of distinct prime factors ω(n)2
Total number of prime factors Ω(n)2
Sum of prime factors7132
Product of prime factors21387
Calculation was done in 0.0001032352 seconds

Divisors of 21387

List of proper divisors 1, 3, 7129
List of all dividers1, 3, 7129, 21387
Number of divisors d(n)4
Sum of all divisors σ(n)28520
Aliquot sum 7133
21387 is a deficient number , since it is larger than the sum of its proper divisors (7133). Its deficiency is 14254.
Calculation was done in 0.0000238419 seconds

Prime numbers

Is 21387 a prime number?No
Is 21387 a semiprime number?Yes
Is 21387 a Chen prime number?No
Is 21387 a Mersenne prime number?No
Calculation was done in 0.0307378769 seconds

Sequences

Is 21387 a Catalan number?No
Is 21387 a Fibonacci number?No
Is 21387 a Idoneal number?No
Calculation was done in 0.0000059605 seconds

Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
21387 is not a Happy number
21387 is not a Humble number
21387 is not a Münchhausen number
21387 is not a Perfect number
21387 is not a Perfect square
21387 is not a Palindrome
Calculation was done in 0.0091531277 seconds

Numeric Bases of 21387

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
2Binary1010011100010112
3Ternary10021000103
4Quaternary110320234
5Quinary11410225
6Senary2430036
7Septenary1162327
8Octal516138
9Nonary323039
10Decimal21387
12Duodecimal1046312
16Hexadecimal538b16
20Vigesimal2d9720
36Base36gi336
60Sexagesimal5uR60
Calculation was done in 0.0000228882 seconds

Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 21387 (n2)457403769
Cube of 21387 (n3)9782494407603
Square root of 21387146.24294854796
Natural Logarithm (ln) of 213879.9705385397857
Decimal Logarithm (log) of 213874.3301498694327
Calculation was done in 0.0000050068 seconds

Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 21387-0.8207860076807
Cosecant of 21387-1.2183443560712
Cosine of 213870.57123579159186
Secant of 213871.7505905874933
Tangent of 21387-1.4368602593921
Cotangent of 21387-0.69596190267181
Calculation was done in 0.0000147820 seconds

Number parity

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

Is 21387 an Even Number?

No

Is 21387 an Odd Number?

Yes, the number 21387 is an odd number.
Total number of all odd numbers from 1 to 21387 is 10694
Sum of all the odd numbers from 1 to 21387 are 114361636
The sum of all odd numbers is a perfect square: 114361636 = 10694
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
Calculation was done in 0.0000071526 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 21387 in words is "twenty-one thousand three hundred eighty-seven", meaning that:
21387 is not an aban number (as it contains the letter a)
21387 is not an eban number (as it contains the letter e)
21387 is not an iban number (as it contains the letter i)
21387 is not an oban number (as it contains the letter o)
21387 is not a tban number (as it contains the letter t)
21387 is not an uban number (as it contains the letter u)
Calculation was done in 0.0000030994 seconds

Numeral systems

How to write 21387 in other number systems?
Bengali numerals২১৩৮৭
Eastern Arabic numerals٢١٬٣٨٧
Hieroglyphs numeralsused in Ancient Egypt𓂭𓂭𓆼𓍤𓎍𓐀
Khmer numerals២១៣៨៧
Japanese numerals二万千三百八十七
Roman numeralsn/a
Thai numerals๒๑๓๘๗
Calculation was done in 0.0001130104 seconds

Translation

How do you say 21387 in 38 different languages?
Arabicواحد و عشرون ألف و ثلاثة مائة و سبعة و ثمانون
Croatiandvadeset i jedna tisuća tristo osamdeset i sedam
Czechdvacet jedna tisíc tři sta osmdesát sedm
Danish en og tyve tusinde tre hundrede syv og firs
Dutchéénentwintigduizend driehonderdzevenentachtig
Estonianakpe blaeve vɔ ɖekɛ alafa etɔ̃ blaenyi vɔ adre
Faroesetjúgo­eitt tusin og trý­hundrað­og­áttati­sjey
Filipinodalawáng pû’t isáng libó’t tatlóng daán at walóng pû’t pitó
Finnishkaksi­kymmentä­yksi­tuhatta­kolme­sataa­kahdeksan­kymmentä­seitsemän
Frenchvingt et un mille trois cent quatre-vingt-sept
Greekείκοσι μία χίλιάδες τριακόσια ογδόντα επτά
Germanein­und­zwanzig­tausend­drei­hundert­sieben­und­achtzig
Hebrewעשרים ואחד אלף שלוש מאות שמונים ושבע
Hindiइक्कीस हज़ार तीन सौ सत्तासी
Hungarianhuszon­egy­ezer­három­száz­nyolcvan­hét
Icelandictuttugu og eitt þúsund og þrjú­hundrað og áttatíu og sjó
Indonesiandua puluh satu ribu tiga ratus delapan puluh tujuh
Italianventunomilatrecentoottantasette
Japanese二万千三百八十七
Korean이만 천삼백팔십칠
Latviandivdesmit viens tūkstoši trīssimt astoņdesmit septiņi
Lithuaniandvidešimt vienas tūkstantis trys šimtai aštuoniasdešimt septyni
Norwegiantjue­ett tusen tre hundre og åtti­sju
Persianبیست و یک هزار و سیصد و هشتاد و هفت
Polishdwadzieścia jeden tysięcy trzysta osiemdziesiąt siedem
Portuguesevinte e um mil trezentos e oitenta e sete
Romaniandouăzeci şi una mii trei sute optzeci şi şapte
Russianдвадцать одна тысяча триста восемьдесят семь
Serbianдвадесет и једна хиљада триста осамдесет и седам
Slovakdvadsať­jedna tisíc tri­sto osemdesiat­sedem
Slovenedvaset ena tisuću tristo osemdeset sedem
Spanish veintiún mil trescientos ochenta y siete
Swahilielfu ishirini na moja, mia tatu na themanini na saba
Swedishtjugoentusentrehundraåttiosju
Thaiสอง​หมื่น​หนึ่ง​พัน​สาม​ร้อย​แปด​สิบ​เจ็ด
Turkishyirmi bir bin üç yüz seksen yedi
Ukrainianдвадцять одна тисяча триста вісімдесят сім
Vietnamesehai mươi mốt nghìn ba trăm tám mươi bảy
Calculation was done in 0.0153968334 seconds

Miscellaneous

Number 21387 reversed78312
Unicode CharacterU+538B
Unix TimestampThu, 01 Jan 1970 05:56:27 +0000
Calculation was done in 0.0000278950 seconds
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