21421280984727648

Names of 21421280984727648

• Cardinal: 21421280984727648 can be written as Twenty-one quadrillion, four hundred twenty-one trillion, two hundred eighty billion, nine hundred eighty-four million, seven hundred twenty-seven thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 2.1421280984727648 × 10¹⁶

Factors of 21421280984727648

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 910

Divisors of 21421280984727648

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 71 96 142 213 284 313 426 521 568 626 852 939 1042 1136 1252 1563 1704 1878 2084 2272 2504 3126 3408 3756 4168 5008 5041 6252 6816 7512 8336 10016 10082 12504 15024 15123 16672 20164 22223 25008 30048 30246 36991 40328 44446 50016 60492 66669 73982 80656 88892 110973 120984 133338 147964 161312 163073 177784 221946 241968 266676 271441 295928 326146 355568 443892 483936 489219 533352 542882 591856 652292 711136 814323 887784 978438 1066704 1085764 1183712 1304584 1577833 1628646 1775568 1956876 2133408 2171528 2609168 2626361 3155666 3257292 3551136 3913752 4343056 4733499 5218336 5252722 6311332 6514584 7827504 7879083 8686112 9466998 10505444 11578183 12622664 13029168 15655008 15758166 18933996 19272311 21010888 23156366 25245328 26058336 31516332 34734549 37867992 38544622 42021776 46312732 50490656 57816933 63032664 69469098 75735984 77089244 84043552 84961033 92625464 115633866 126065328 138938196 141420761 151471968 154178488 169922066 185250928 231267732 252130656 254883099 277876392 282841522 308356976 339844132 370501856 424262283 462535464 509766198 555752784 565683044 616713952 679688264 822050993 848524566 925070928 1019532396 1111505568 1131366088 1359376528 1368334081 1644101986 1697049132 1850141856 2039064792 2262732176 2466152979 2718753056 2736668162 3288203972 3394098264 4078129584 4105002243 4525464352 4932305958 5473336324 6032233343 6576407944 6788196528 8156259168 8210004486 9864611916 10040874031 10946672648 12064466686 13152815888 13576393056 16420008972 18096700029 19729223832 20081748062 21893345296 24128933372 26305631776 30122622093 32840017944 36193400058 39458447664 40163496124 43786690592 44264698193 48257866744 60245244186 65680035888 72386800116 78916895328 80326992248 88529396386 96515733488 120490488372 131360071776 132794094579 144773600232 160653984496 177058792772 193031466976 240980976744 265588189158 289547200464 321307968992 354117585544 428288567353 481961953488 531176378316 579094400928 708235171088 712902056201 856577134706 963923906976 1062352756632 1284865702059 1416470342176 1425804112402 1713154269412 2124705513264 2138706168603 2569731404118 2851608224804 3142793571703 3426308538824 4249411026528 4277412337206 5139462808236 5703216449608 6285587143406 6852617077648 8554824674412 9428380715109 10278925616472 11406432899216 12571174286812 13705234155296 17109649348824 18856761430218 20557851232944 22812865798432 25142348573624 34219298697648 37713522860436 41115702465888 50284697147248 68438597395296 75427045720872 100569394294496 150854091441744 223138343590913 301708182883488 446276687181826 669415030772739 892553374363652 1338830061545478 1785106748727304 2677660123090956 3570213497454608 5355320246181912 7140426994909216 10710640492363824 21421280984727648
• Sum of all divisors σ(n): 57326249714067936
• Sum of proper divisors (its aliquot sum) s(n): 35904968729340288
• 21421280984727648 is an abundant number, because the sum of its proper divisors (35904968729340288) is greater than itself. Its abundance is 14483687744612640

Bases of 21421280984727648

• Binary: 1001100000110101000101010100011101110101000000001100000₂
• Hexadecimal: 0x4C1A8AA3BA8060
• Base-36: 5UX7KMP7ZHC

Squares and roots of 21421280984727648

• 21421280984727648 squared (21421280984727648²) is 458871279026654312787420735611904
• 21421280984727648 cubed (21421280984727648³) is 9829610603851324828095950795561711882660066721792
• The square root of 21421280984727648 is 146360107.2175326333
• The cube root of 21421280984727648 is 277725.1090534595

Scales and comparisons

• 21,421,280,984,727,648 seconds is equal to 681,130,474 years, 48 weeks, 6 days, 19 hours, 48 seconds.
• To count from 1 to 21,421,280,984,727,648 would take you about two billion, forty-three million, three hundred ninety-one thousand, four hundred twenty-four years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21421280984727648 cubic inches would be around 23143.8 feet tall.

Recreational maths with 21421280984727648

• 21421280984727648 backwards is 84672748908212412
• The number of decimal digits it has is: 17
• The sum of 21421280984727648's digits is 75
• More coming soon!