20643644736

Names of 20643644736

• Cardinal: 20643644736 can be written as Twenty billion, six hundred forty-three million, six hundred forty-four thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.0643644736 × 10¹⁰

Factors of 20643644736

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1512

Divisors of 20643644736

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 32 33 36 39 44 48 52 64 66 72 78 88 96 99 104 117 132 143 144 156 169 176 192 198 208 234 264 286 288 312 338 352 396 416 429 468 507 528 572 576 624 676 704 792 832 858 936 1014 1056 1144 1248 1287 1352 1483 1521 1584 1716 1859 1872 2028 2112 2197 2288 2496 2574 2704 2966 3042 3168 3432 3718 3744 4056 4394 4449 4576 5148 5408 5577 5932 6084 6336 6591 6864 7436 7488 8112 8788 8898 9152 10296 10816 11154 11864 12168 13182 13347 13728 14872 16224 16313 16731 17576 17796 19279 19773 20592 22308 23728 24167 24336 26364 26694 27456 29744 32448 32626 33462 35152 35592 38558 39546 41184 44616 47456 48334 48672 48939 52728 53388 57837 59488 65252 66924 70304 71184 72501 77116 79092 82368 89232 94912 96668 97344 97878 105456 106776 115674 118976 130504 133848 140608 142368 145002 146817 154232 158184 173511 178464 193336 195756 210912 212069 213552 217503 231348 250627 261008 267696 284736 290004 293634 308464 316368 347022 356928 386672 391512 421824 424138 427104 435006 462696 501254 522016 535392 580008 587268 616928 632736 636207 694044 751881 773344 783024 848276 854208 870012 925392 1002508 1044032 1070784 1160016 1174536 1233856 1265472 1272414 1388088 1503762 1546688 1566048 1696552 1740024 1850784 1908621 2005016 2255643 2320032 2349072 2544828 2756897 2776176 3007524 3132096 3258151 3393104 3480048 3701568 3817242 4010032 4511286 4640064 4698144 5089656 5513794 5552352 6015048 6516302 6786208 6960096 7634484 8020064 8270691 9022572 9396288 9774453 10179312 11027588 11104704 12030096 13032604 13572416 13920192 15268968 16040128 16541382 18045144 19548906 20358624 22055176 24060192 24812073 26065208 29323359 30537936 33082764 35839661 36090288 39097812 40717248 44110352 48120384 49624146 52130416 58646718 61075872 66165528 71679322 72180576 78195624 88220704 99248292 104260832 107518983 117293436 122151744 132331056 143358644 144361152 156391248 176441408 198496584 208521664 215037966 234586872 264662112 286717288 312782496 322556949 396993168 430075932 469173744 529324224 573434576 625564992 645113898 793986336 860151864 938347488 1146869152 1290227796 1587972672 1720303728 1876694976 2293738304 2580455592 3440607456 5160911184 6881214912 10321822368 20643644736
• Sum of all divisors σ(n): 69974399040
• Sum of proper divisors (its aliquot sum) s(n): 49330754304
• 20643644736 is an abundant number, because the sum of its proper divisors (49330754304) is greater than itself. Its abundance is 28687109568

Bases of 20643644736

• Binary: 10011001110011101010000010101000000₂
• Hexadecimal: 0x4CE750540
• Base-36: 9HEOY80

Squares and roots of 20643644736

• 20643644736 squared (20643644736²) is 426160067986180509696
• 20643644736 cubed (20643644736³) is 8797497044176317399731627360256
• The square root of 20643644736 is 143678.9641388049
• The cube root of 20643644736 is 2743.2293931529

Scales and comparisons

• 20,643,644,736 seconds is equal to 656 years, 21 weeks, 1 hour, 45 minutes, 36 seconds.
• To count from 1 to 20,643,644,736 would take you about one thousand, three hundred twelve 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 20643644736 cubic inches would be around 228.6 feet tall.

Recreational maths with 20643644736

• 20643644736 backwards is 63744634602
• The number of decimal digits it has is: 11
• The sum of 20643644736's digits is 45
• More coming soon!