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20921

Number 20921 is an odd five-digits prime number and natural number following 20920 and preceding 20922.

Properties of the number 20921

Nominal20921
Cardinaltwenty thousand nine hundred twenty-one
Cardinal
twenty thousand nine hundred twenty-one
Ordinal20,921st
Number of digits5
Sum of digits14
Product of digits0
Number parityOdd
Calculation was done in 0.0000410080 seconds

Prime Factorization of 20921

Prime factorization20921
Prime factors20921
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)1
Sum of prime factors20921
Product of prime factors20921
Calculation was done in 0.0019431114 seconds

Divisors of 20921

List of proper divisors 1
List of all dividers1, 20921
Number of divisors d(n)2
Sum of all divisors σ(n)20922
Aliquot sum 1
20921 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 20920.
Calculation was done in 0.0000288486 seconds

Prime numbers

Is 20921 a prime number?Yes
Is 20921 a semiprime number?No
Is 20921 a Chen prime number?No
Is 20921 a Mersenne prime number?No
Calculation was done in 0.1687698364 seconds

Sequences

Is 20921 a Catalan number?No
Is 20921 a Fibonacci number?No
Is 20921 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.
20921 is not a Happy number
20921 is not a Humble number
20921 is not a Münchhausen number
20921 is not a Perfect number
20921 is not a Perfect square
20921 is not a Palindrome
Calculation was done in 0.0069370270 seconds

Numeric Bases of 20921

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
2Binary1010001101110012
3Ternary10012002123
4Quaternary110123214
5Quinary11321415
6Senary2405056
7Septenary1146657
8Octal506718
9Nonary316259
10Decimal20921
12Duodecimal1013512
16Hexadecimal51b916
20Vigesimal2c6120
36Base36g5536
60Sexagesimal5mf60
Calculation was done in 0.0000209808 seconds

Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 20921 (n2)437688241
Cube of 20921 (n3)9156875689961
Square root of 20921144.64093473149
Natural Logarithm (ln) of 209219.9485087181836
Decimal Logarithm (log) of 209214.3205824394736
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 20921-0.90633133889311
Cosecant of 20921-1.1033492466688
Cosine of 20921-0.42256775094679
Secant of 20921-2.3664844223428
Tangent of 209212.1448189949716
Cotangent of 209210.46623980967366
Calculation was done in 0.0000500679 seconds

Number parity

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

Is 20921 an Even Number?

No

Is 20921 an Odd Number?

Yes, the number 20921 is an odd number.
Total number of all odd numbers from 1 to 20921 is 10461
Sum of all the odd numbers from 1 to 20921 are 109432521
The sum of all odd numbers is a perfect square: 109432521 = 10461
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 0.0000081062 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 20921 in words is "twenty thousand nine hundred twenty-one", meaning that:
20921 is not an aban number (as it contains the letter a)
20921 is not an eban number (as it contains the letter e)
20921 is not an iban number (as it contains the letter i)
20921 is not an oban number (as it contains the letter o)
20921 is not a tban number (as it contains the letter t)
20921 is not an uban number (as it contains the letter u)
Calculation was done in 0.0000019073 seconds

Numeral systems

How to write 20921 in other number systems?
Bengali numerals২০৯২১
Eastern Arabic numerals٢٠٬٩٢١
Hieroglyphs numeralsused in Ancient Egypt𓂭𓂭𓍪𓎇𓏺
Khmer numerals២០៩២១
Japanese numerals二万九百二十一
Roman numeralsn/a
Thai numerals๒๐๙๒๑
Calculation was done in 0.0001578331 seconds

Translation

How do you say 20921 in 38 different languages?
Arabicعشرون ألف و تسعة مائة و واحد و عشرون
Croatiandvadeset tisuća devetsto dvadeset i jedan
Czechdvacet tisíc devět set dvacet jeden
Danish tyve tusinde ni hundrede en og tyve
Dutchtwintigduizend negenhonderdéénentwintig
Estonianakpe blaeve alafa asieke blaeve vɔ ɖekɛ
Faroesetjúgo tusin og níggju­hundrað­og­tjúgo­ein
Filipinodalawáng pû libó’t siyám na daán at dalawáng pû’t isá
Finnishkaksi­kymmentä­tuhatta­yhdeksän­sataa­kaksi­kymmentä­yksi
Frenchvingt mille neuf cent vingt et un
Greekείκοσι χίλιάδες εννιακόσια είκοσι ένα
Germanzwanzig­tausend­neun­hundert­ein­und­zwanzig
Hebrewעשרים אלף תשע מאות עשרים ואחת
Hindiबीस हज़ार नौ सौ इक्कीस
Hungarianhúsz­ezer­kilenc­száz­huszon­egy
Icelandictuttugu þúsund og níu­hundrað og tuttugu og einn
Indonesiandua puluh ribu sembilan ratus dua puluh satu
Italianventimilanovecentoventuno
Japanese二万九百二十一
Korean이만 구백이십일
Latviandivdesmit tūkstoši deviņsimt divdesmit viens
Lithuaniandvidešimt tūkstančių devyni šimtai dvidešimt vienas
Norwegiantjue tusen ni hundre og tjue­én
Persianبیست هزار و نهصد و بیست و یک
Polishdwadzieścia tysięcy dziewięćset dwadzieścia jeden
Portuguesevinte mil novecentos e vinte e um
Romaniandouăzeci mii nouă sute douăzeci şi unu
Russianдвадцать тысяч девятьсот двадцать один
Serbianдвадесет хиљада деветсто двадесет и један
Slovakdvadsať tisíc deväť­sto dvadsať­jeden
Slovenedvaset tisuću devetsto dvaset ena
Spanish veinte mil novecientos veintiuno
Swahilielfu ishirini, mia tisa na ishirini na moja
Swedishtjugotusenniohundratjugoen
Thaiสอง​หมื่น​เก้า​ร้อย​ยี่​สิบ​เอ็ด
Turkishyirmi bin dokuz yüz yirmi bir
Ukrainianдвадцять тисяч девʼятсот двадцять один
Vietnamesehai mươi nghìn chín trăm hai mươi mốt
Calculation was done in 0.0163271427 seconds

Miscellaneous

Number 20921 reversed12902
Unicode CharacterU+51B9
Unix TimestampThu, 01 Jan 1970 05:48:41 +0000
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