| Nominal | 21380 |
| Cardinal | twenty-one thousand three hundred eighty |
Cardinal twenty-one thousand three hundred eighty | |
| Ordinal | 21,380th |
| Number of digits | 5 |
| Sum of digits | 14 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 5 x 1069 |
| Prime factorization in exponent form | 22 x 5 x 1069 |
| Prime factors | 2, 5, 1069 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 4 |
| Sum of prime factors | 1076 |
| Product of prime factors | 10690 |
| Is 21380 a prime number? | No |
| Is 21380 a semiprime number? | No |
| Is 21380 a Chen prime number? | No |
| Is 21380 a Mersenne prime number? | No |
| Is 21380 a Catalan number? | No |
| Is 21380 a Fibonacci number? | No |
| Is 21380 a Idoneal number? | No |
| Square of 21380 (n2) | 457104400 |
| Cube of 21380 (n3) | 9772892072000 |
| Square root of 21380 | 146.21901381147 |
| Natural Logarithm (ln) of 21380 | 9.970211184579 |
| Decimal Logarithm (log) of 21380 | 4.3300077008728 |
| Sine of 21380 | -0.99408668130829 |
| Cosecant of 21380 | -1.0059484940327 |
| Cosine of 21380 | -0.10858945641943 |
| Secant of 21380 | -9.2089971989308 |
| Tangent of 21380 | 9.1545414636625 |
| Cotangent of 21380 | 0.10923540015296 |
| The spelling of 21380 in words is "twenty-one thousand three hundred eighty", meaning that: |
| 21380 is not an aban number (as it contains the letter a) |
| 21380 is not an eban number (as it contains the letter e) |
| 21380 is not an iban number (as it contains the letter i) |
| 21380 is not an oban number (as it contains the letter o) |
| 21380 is not a tban number (as it contains the letter t) |
| 21380 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৩৮০ |
| Eastern Arabic numerals | ٢١٬٣٨٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍤𓎍 |
| Khmer numerals | ២១៣៨០ |
| Japanese numerals | 二万千三百八十 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๓๘๐ |
| Arabic | واحد و عشرون ألف و ثلاثة مائة و ثمانون |
| Croatian | dvadeset i jedna tisuća tristo osamdeset |
| Czech | dvacet jedna tisíc tři sta osmdesát |
| Danish | en og tyve tusinde tre hundrede firs |
| Dutch | éénentwintigduizend driehonderdtachtig |
| Estonian | akpe blaeve vɔ ɖekɛ alafa etɔ̃ kple blaenyi |
| Faroese | tjúgoeitt tusin og trýhundraðogáttati |
| Filipino | dalawáng pû’t isáng libó’t tatlóng daán at walóng pû |
| Finnish | kaksikymmentäyksituhattakolmesataakahdeksankymmentä |
| French | vingt et un mille trois cent quatre-vingts |
| Greek | είκοσι μία χίλιάδες τριακόσια ογδόντα |
| German | einundzwanzigtausenddreihundertachtzig |
| Hebrew | עשרים ואחד אלף שלוש מאות שמונים |
| Hindi | इक्कीस हज़ार तीन सौ अस्सी |
| Hungarian | huszonegyezerháromszáznyolcvan |
| Icelandic | tuttugu og eitt þúsund og þrjúhundrað og áttatíu |
| Indonesian | dua puluh satu ribu tiga ratus delapan puluh |
| Italian | ventunomilatrecentoottanta |
| Japanese | 二万千三百八十 |
| Korean | 이만 천삼백팔십 |
| Latvian | divdesmit viens tūkstoši trīssimt astoņdesmit |
| Lithuanian | dvidešimt vienas tūkstantis trys šimtai aštuoniasdešimt |
| Norwegian | tjueett tusen tre hundre og åtti |
| Persian | بیست و یک هزار و سیصد و هشتاد |
| Polish | dwadzieścia jeden tysięcy trzysta osiemdziesiąt |
| Portuguese | vinte e um mil trezentos e oitenta |
| Romanian | douăzeci şi una mii trei sute optzeci |
| Russian | двадцать одна тысяча триста восемьдесят |
| Serbian | двадесет и једна хиљада триста осамдесет |
| Slovak | dvadsaťjedna tisíc tristo osemdesiat |
| Slovene | dvaset ena tisuću tristo osemdeset |
| Spanish | veintiún mil trescientos ochenta |
| Swahili | elfu ishirini na moja, mia tatu na themanini |
| Swedish | tjugoentusentrehundraåttio |
| Thai | สองหมื่นหนึ่งพันสามร้อยแปดสิบ |
| Turkish | yirmi bir bin üç yüz seksen |
| Ukrainian | двадцять одна тисяча триста вісімдесят |
| Vietnamese | hai mươi mốt nghìn ba trăm tám mươi |
| Number 21380 reversed | 08312 | |
| Unicode Character | U+5384 | 厄 |
| Unix Timestamp | Thu, 01 Jan 1970 05:56:20 +0000 | |