21311561964

Names of 21311561964

• Cardinal: 21311561964 can be written as Twenty-one billion, three hundred eleven million, five hundred sixty-one thousand, nine hundred sixty-four.

Scientific notation

• Scientific notation: 2.1311561964 × 10¹⁰

Factors of 21311561964

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 160

Divisors of 21311561964

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 11 12 14 17 19 21 22 28 33 34 38 42 44 49 51 57 66 68 76 77 84 98 101 102 114 119 132 133 147 154 187 196 202 204 209 228 231 238 266 294 303 308 323 357 374 399 404 418 462 476 532 539 561 588 606 627 646 707 714 748 798 833 836 924 931 969 1078 1111 1122 1212 1254 1292 1309 1414 1428 1463 1596 1617 1666 1717 1862 1919 1938 2121 2156 2222 2244 2261 2499 2508 2618 2793 2828 2926 3234 3332 3333 3434 3553 3724 3838 3876 3927 4242 4389 4444 4522 4949 4998 5151 5236 5586 5757 5852 6468 6666 6783 6868 7106 7676 7777 7854 8484 8778 9044 9163 9898 9996 10201 10241 10302 10659 11172 11514 12019 13332 13433 13566 14212 14847 15554 15708 15827 17556 18326 18887 19796 20402 20482 20604 21109 21318 23028 23331 24038 24871 26866 27132 27489 29694 30603 30723 31108 31654 32623 36057 36652 37774 40299 40804 40964 42218 42636 46662 47481 48076 49742 53732 54439 54978 56661 59388 61206 61446 63308 63327 65246 71407 72114 74613 75548 80598 84133 84436 93324 94031 94962 97869 99484 108878 109956 112211 113322 122412 122892 126654 130492 132209 142814 144228 147763 149226 161196 163317 168266 173417 174097 188062 189924 193819 195738 214221 217756 224422 226644 228361 252399 253308 264418 282093 285628 295526 298452 326634 336532 336633 346834 348194 358853 376124 387638 391476 396627 428442 443289 448844 456722 499849 504798 520251 522291 528836 564186 581457 591052 653268 673266 685083 693668 696388 717706 775276 785477 793254 856884 886578 913444 925463 999698 1009596 1034341 1040502 1044582 1076559 1128372 1162914 1213919 1346532 1356733 1370166 1435412 1499547 1570954 1586508 1598527 1773156 1850926 1907587 1999396 2068682 2081004 2089164 2132009 2153118 2325828 2356431 2427838 2511971 2713466 2740332 2776389 2999094 3103023 3141908 3197054 3294923 3641757 3701852 3815174 4070199 4137364 4264018 4306236 4712862 4795581 4855676 5023942 5426932 5498339 5552778 5722761 5998188 6206046 6394108 6396027 6589846 7283514 7535913 7630348 8140398 8497433 8528036 9425724 9497131 9591162 9884769 10047884 10996678 11105556 11445522 12412092 12792054 13179692 13353109 14567028 14924063 15071826 16280796 16495017 16994866 17583797 18994262 19182324 19769538 21993356 22891044 23064461 25492299 25584108 26706218 28491393 29848126 30143652 32990034 33989732 35167594 36244153 37988524 39539076 40059327 44772189 46128922 50984598 52751391 53412436 56982786 59696252 65980068 69193383 70335188 72488306 80118654 89544378 92257844 93471763 101969196 104468441 105502782 108732459 113965572 138386766 144976612 160237308 161451227 179088756 186943526 208936882 211005564 217464918 253709071 276773532 280415289 313405323 322902454 373887052 417873764 434929836 484353681 507418142 560830578 626810646 645804908 761127213 968707362 1014836284 1121661156 1253621292 1522254426 1775963497 1937414724 3044508852 3551926994 5327890491 7103853988 10655780982 21311561964
• Sum of all divisors σ(n): 71036300160
• Sum of proper divisors (its aliquot sum) s(n): 49724738196
• 21311561964 is an abundant number, because the sum of its proper divisors (49724738196) is greater than itself. Its abundance is 28413176232

Bases of 21311561964

• Binary: 10011110110010001001010000011101100₂
• Hexadecimal: 0x4F644A0EC
• Base-36: 9SGCQGC

Squares and roots of 21311561964

• 21311561964 squared (21311561964²) is 454182673345411537296
• 21311561964 cubed (21311561964³) is 9679342185975909152164201009344
• The square root of 21311561964 is 145984.8004553899
• The cube root of 21311561964 is 2772.5013122509

Scales and comparisons

• 21,311,561,964 seconds is equal to 677 years, 33 weeks, 2 days, 14 hours, 19 minutes, 24 seconds.
• To count from 1 to 21,311,561,964 would take you about one thousand, three hundred fifty-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 21311561964 cubic inches would be around 231 feet tall.

Recreational maths with 21311561964

• 21311561964 backwards is 46916511312
• The number of decimal digits it has is: 11
• The sum of 21311561964's digits is 39
• More coming soon!