21027924918

Names of 21027924918

• Cardinal: 21027924918 can be written as Twenty-one billion, twenty-seven million, nine hundred twenty-four thousand, nine hundred eighteen.

Scientific notation

• Scientific notation: 2.1027924918 × 10¹⁰

Factors of 21027924918

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 109

Divisors of 21027924918

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 6 7 9 11 13 14 18 21 22 26 27 33 39 42 54 63 66 73 77 78 91 99 117 126 143 146 154 182 189 198 219 231 234 273 286 297 351 378 429 438 462 511 546 594 657 693 702 803 819 858 949 1001 1022 1287 1314 1386 1533 1606 1638 1898 1971 2002 2079 2409 2457 2574 2847 3003 3066 3861 3942 4158 4599 4818 4914 5329 5621 5694 6006 6643 7227 7722 8541 9009 9198 10439 10658 11242 13286 13797 14454 15987 16863 17082 18018 19929 20878 21681 25623 27027 27594 31317 31974 33726 37303 39858 43362 47961 50589 51246 54054 58619 59787 62634 69277 73073 74606 93951 95922 101178 111909 117238 119574 138554 143883 146146 151767 175857 179361 187902 207831 219219 223818 281853 287766 303534 335727 351714 358722 389017 410333 415662 438438 484939 527571 563706 623493 657657 671454 762047 778034 820666 969878 1007181 1055142 1167051 1230999 1246986 1315314 1454817 1524094 1582713 1870479 1972971 2014362 2286141 2334102 2461998 2723119 2909634 3165426 3501153 3692997 3740958 3945942 4279187 4364451 4572282 5057221 5334329 5446238 6858423 7002306 7385994 8169357 8558374 8728902 10114442 10503459 10668658 11078991 12837561 13093353 13716846 15171663 16002987 16338714 20575269 21006918 22157982 24508071 25675122 26186706 29954309 30343326 32005974 35400547 38512683 41150538 45514989 48008961 49016142 55629431 59908618 70801094 73524213 77025366 89862927 91029978 96017922 106201641 111258862 115538049 136544967 144026883 147048426 166888293 179725854 212403282 231076098 269588781 273089934 288053766 318604923 333776586 389406017 500664879 539177562 637209846 778812034 808766343 955814769 1001329758 1168218051 1501994637 1617532686 1911629538 2336436102 3003989274 3504654153 7009308306 10513962459 21027924918
• Sum of all divisors σ(n): 63612057600
• Sum of proper divisors (its aliquot sum) s(n): 42584132682
• 21027924918 is an abundant number, because the sum of its proper divisors (42584132682) is greater than itself. Its abundance is 21556207764

Bases of 21027924918

• Binary: 10011100101010111001010101110110110₂
• Hexadecimal: 0x4E55CABB6
• Base-36: 9NRHEPI

Squares and roots of 21027924918

• 21027924918 squared (21027924918²) is 442173626357045306724
• 21027924918 cubed (21027924918³) is 9297993815755734570116552548632
• The square root of 21027924918 is 145010.0855733835
• The cube root of 21027924918 is 2760.1465352257

Scales and comparisons

• 21,027,924,918 seconds is equal to 668 years, 32 weeks, 2 days, 18 hours, 15 minutes, 18 seconds.
• To count from 1 to 21,027,924,918 would take you about one thousand, three hundred thirty-seven 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 21027924918 cubic inches would be around 230 feet tall.

Recreational maths with 21027924918

• 21027924918 backwards is 81942972012
• The number of decimal digits it has is: 11
• The sum of 21027924918's digits is 45
• More coming soon!