| Nominal | 21740 |
| Cardinal | twenty-one thousand seven hundred forty |
Cardinal twenty-one thousand seven hundred forty | |
| Ordinal | 21,740th |
| Number of digits | 5 |
| Sum of digits | 14 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 5 x 1087 |
| Prime factorization in exponent form | 22 x 5 x 1087 |
| Prime factors | 2, 5, 1087 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 4 |
| Sum of prime factors | 1094 |
| Product of prime factors | 10870 |
| Is 21740 a prime number? | No |
| Is 21740 a semiprime number? | No |
| Is 21740 a Chen prime number? | No |
| Is 21740 a Mersenne prime number? | No |
| Is 21740 a Catalan number? | No |
| Is 21740 a Fibonacci number? | No |
| Is 21740 a Idoneal number? | No |
| Square of 21740 (n2) | 472627600 |
| Cube of 21740 (n3) | 10274924024000 |
| Square root of 21740 | 147.44490496453 |
| Natural Logarithm (ln) of 21740 | 9.9869091606752 |
| Decimal Logarithm (log) of 21740 | 4.3372595397503 |
| Sine of 21740 | 0.17788539849496 |
| Cosecant of 21740 | 5.6215968733844 |
| Cosine of 21740 | 0.98405121055883 |
| Secant of 21740 | 1.0162072758715 |
| Tangent of 21740 | 0.18076843622187 |
| Cotangent of 21740 | 5.5319392085276 |
| The spelling of 21740 in words is "twenty-one thousand seven hundred forty", meaning that: |
| 21740 is not an aban number (as it contains the letter a) |
| 21740 is not an eban number (as it contains the letter e) |
| 21740 is an iban number (a number without the letter i) |
| 21740 is not an oban number (as it contains the letter o) |
| 21740 is not a tban number (as it contains the letter t) |
| 21740 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৭৪০ |
| Eastern Arabic numerals | ٢١٬٧٤٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍨𓎉 |
| Khmer numerals | ២១៧៤០ |
| Japanese numerals | 二万千七百四十 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๗๔๐ |
| Arabic | واحد و عشرون ألف و سبعة مائة و أربعون |
| Croatian | dvadeset i jedna tisuća sedamsto četrdeset |
| Czech | dvacet jedna tisíc sedm set čtyřicet |
| Danish | en og tyve tusinde syv hundrede fyrre |
| Dutch | éénentwintigduizend zevenhonderdveertig |
| Estonian | akpe blaeve vɔ ɖekɛ alafa adre kple blaene |
| Faroese | tjúgoeitt tusin og sjeyhundraðogfýrati |
| Filipino | dalawáng pû’t isáng libó’t pitóng daán at ápat na pû |
| Finnish | kaksikymmentäyksituhattaseitsemänsataaneljäkymmentä |
| French | vingt et un mille sept cent quarante |
| Greek | είκοσι μία χίλιάδες επτακόσια σαράντα |
| German | einundzwanzigtausendsiebenhundertvierzig |
| Hebrew | עשרים ואחד אלף שבע מאות ארבעים |
| Hindi | इक्कीस हज़ार सात सौ चालीस |
| Hungarian | huszonegyezerhétszáznegyven |
| Icelandic | tuttugu og eitt þúsund og sjóhundrað og fjörutíu |
| Indonesian | dua puluh satu ribu tujuh ratus empat puluh |
| Italian | ventunomilasettecentoquaranta |
| Japanese | 二万千七百四十 |
| Korean | 이만 천칠백사십 |
| Latvian | divdesmit viens tūkstoši septiņsimt četrdesmit |
| Lithuanian | dvidešimt vienas tūkstantis septyni šimtai keturiasdešimt |
| Norwegian | tjueett tusen sju hundre og førti |
| Persian | بیست و یک هزار و هفتصد و چهل |
| Polish | dwadzieścia jeden tysięcy siedemset czterdzieści |
| Portuguese | vinte e um mil setecentos e quarenta |
| Romanian | douăzeci şi una mii şapte sute patruzeci |
| Russian | двадцать одна тысяча семьсот сорок |
| Serbian | двадесет и једна хиљада седамсто четрдесет |
| Slovak | dvadsaťjedna tisíc sedemsto štyridsať |
| Slovene | dvaset ena tisuću sedemsto štirideset |
| Spanish | veintiún mil setecientos cuarenta |
| Swahili | elfu ishirini na moja, mia saba na arobaini |
| Swedish | tjugoentusensjuhundrafyrtio |
| Thai | สองหมื่นหนึ่งพันเจ็ดร้อยสี่สิบ |
| Turkish | yirmi bir bin yedi yüz kırk |
| Ukrainian | двадцять одна тисяча сімсот сорок |
| Vietnamese | hai mươi mốt nghìn bảy trăm bốn mươi |
| Number 21740 reversed | 04712 | |
| Unicode Character | U+54EC | 哬 |
| Unix Timestamp | Thu, 01 Jan 1970 06:02:20 +0000 | |