21493751916

Names of 21493751916

• Cardinal: 21493751916 can be written as Twenty-one billion, four hundred ninety-three million, seven hundred fifty-one thousand, nine hundred sixteen.

Scientific notation

• Scientific notation: 2.1493751916 × 10¹⁰

Factors of 21493751916

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 73

Divisors of 21493751916

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 12 13 14 17 21 26 28 31 34 39 42 51 52 62 68 78 84 91 93 102 119 124 156 169 182 186 204 217 221 238 273 289 338 357 364 372 403 434 442 476 507 527 546 578 651 663 676 714 806 867 868 884 1014 1054 1092 1156 1183 1209 1302 1326 1428 1547 1581 1612 1734 2023 2028 2108 2197 2366 2418 2604 2652 2821 2873 3094 3162 3468 3549 3689 3757 4046 4394 4641 4732 4836 5239 5642 5746 6069 6188 6324 6591 6851 7098 7378 7514 8092 8463 8619 8788 8959 9282 10478 11067 11271 11284 11492 12138 13182 13702 14196 14756 15028 15379 15717 16926 17238 17918 18564 20111 20553 20956 22134 22542 24276 26299 26364 26877 27404 28561 30758 31434 33852 34476 35836 36673 37349 40222 41106 44268 45084 46137 47957 48841 52598 53754 57122 60333 61516 62713 62868 68107 73346 74698 78897 80444 82212 85683 89063 92274 95914 97682 105196 107508 110019 112047 114244 116467 120666 125426 136214 143871 146523 146692 149396 157794 171366 178126 184548 188139 191828 195364 199927 204321 220038 224094 232934 241332 250852 261443 267189 272428 287742 293046 315588 341887 342732 349401 356252 376278 399854 408642 440076 448188 465868 476749 485537 522886 534378 575484 586092 599781 623441 634933 683774 698802 752556 784329 799708 815269 817284 885391 953498 971074 1025661 1045772 1068756 1157819 1199562 1246882 1269866 1367548 1397604 1430247 1456611 1514071 1568658 1630538 1770782 1870323 1904799 1906996 1942148 2051322 2315638 2399124 2445807 2493764 2539732 2656173 2860494 2913222 3028142 3137316 3261076 3398759 3473457 3541564 3740646 3809598 4102644 4444531 4542213 4631276 4891614 5312346 5720988 5826444 6056284 6197737 6797518 6946914 7481292 7619196 8104733 8254129 8889062 9084426 9783228 10196277 10598497 10624692 12395474 13333593 13595036 13893828 15051647 16209466 16508258 17778124 18168852 18593211 19682923 20392554 21196994 24314199 24762387 24790948 26667186 30103294 31795491 32418932 33016516 37186422 39365846 40785108 42393988 45154941 48628398 49524774 53334372 57778903 59048769 60206588 63590982 74372844 78731692 90309882 97256796 99049548 105361529 115557806 118097538 127181964 137780461 173336709 180619764 210723058 231115612 236195076 255877999 275560922 316084587 346673418 413341383 421446116 511755998 551121844 632169174 693346836 767633997 826682766 1023511996 1264338348 1535267994 1653365532 1791145993 3070535988 3582291986 5373437979 7164583972 10746875958 21493751916
• Sum of all divisors σ(n): 68088022016
• Sum of proper divisors (its aliquot sum) s(n): 46594270100
• 21493751916 is an abundant number, because the sum of its proper divisors (46594270100) is greater than itself. Its abundance is 25100518184

Bases of 21493751916

• Binary: 10100000001001000001010000001101100₂
• Hexadecimal: 0x50120A06C
• Base-36: 9VGTP4C

Squares and roots of 21493751916

• 21493751916 squared (21493751916²) is 461981371426553671056
• 21493751916 cubed (21493751916³) is 9929712987255795620536733743296
• The square root of 21493751916 is 146607.4756484131
• The cube root of 21493751916 is 2780.3794970427

Scales and comparisons

• 21,493,751,916 seconds is equal to 683 years, 22 weeks, 4 days, 6 hours, 38 minutes, 36 seconds.
• To count from 1 to 21,493,751,916 would take you about one thousand, three hundred sixty-six 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 21493751916 cubic inches would be around 231.7 feet tall.

Recreational maths with 21493751916

• 21493751916 backwards is 61915739412
• The number of decimal digits it has is: 11
• The sum of 21493751916's digits is 48
• More coming soon!