21210438602640

Names of 21210438602640

• Cardinal: 21210438602640 can be written as Twenty-one trillion, two hundred ten billion, four hundred thirty-eight million, six hundred two thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.121043860264 × 10¹³

Factors of 21210438602640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 206971571

Divisors of 21210438602640

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 61 70 80 84 105 112 120 122 140 168 183 210 240 244 280 305 336 366 420 427 488 560 610 732 840 854 915 976 1220 1281 1464 1680 1708 1830 2135 2440 2562 2928 3416 3660 4270 4880 5124 6405 6832 7320 8540 10248 12810 14640 17080 20496 25620 34160 51240 102480 206971493 413942986 620914479 827885972 1034857465 1241828958 1448800451 1655771944 2069714930 2483657916 2897600902 3104572395 3311543888 4139429860 4346401353 4967315832 5795201804 6209144790 7244002255 8278859720 8692802706 9934631664 11590403608 12418289580 12625261073 14488004510 16557719440 17385605412 21732006765 23180807216 24836579160 25250522146 28976009020 34771210824 37875783219 43464013530 49673158320 50501044292 57952018040 63126305365 69542421648 75751566438 86928027060 88376827511 101002088584 115904036080 126252610730 151503132876 173856054120 176753655022 189378916095 202004177168 252505221460 265130482533 303006265752 347712108240 353507310044 378757832190 441884137555 505010442920 530260965066 606012531504 707014620088 757515664380 883768275110 1010020885840 1060521930132 1325652412665 1414029240176 1515031328760 1767536550220 2121043860264 2651304825330 3030062657520 3535073100440 4242087720528 5302609650660 7070146200880 10605219301320 21210438602640
• Sum of all divisors σ(n): 76377448601856
• Sum of proper divisors (its aliquot sum) s(n): 55167009999216
• 21210438602640 is an abundant number, because the sum of its proper divisors (55167009999216) is greater than itself. Its abundance is 33956571396576

Bases of 21210438602640

• Binary: 100110100101001110000101010001000111110010000₂
• Hexadecimal: 0x134A70A88F90
• Base-36: 7INXVI8PC

Squares and roots of 21210438602640

• 21210438602640 squared (21210438602640²) is 449882705716361075814969600
• 21210438602640 cubed (21210438602640³) is 9542209507986435957094550901818079744000
• The square root of 21210438602640 is 4605479.1935953853
• The cube root of 21210438602640 is 27681.0918512543

Scales and comparisons

• 21,210,438,602,640 seconds is equal to 674,426 years, 17 weeks, 4 days, 12 hours, 44 minutes.
• To count from 1 to 21,210,438,602,640 would take you about one million, six hundred eighty-six thousand and sixty-five 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 21210438602640 cubic inches would be around 2306.8 feet tall.

Recreational maths with 21210438602640

• 21210438602640 backwards is 04620683401212
• The number of decimal digits it has is: 14
• The sum of 21210438602640's digits is 39
• More coming soon!