644464994940

Names of 644464994940

• Cardinal: 644464994940 can be written as Six hundred forty-four billion, four hundred sixty-four million, nine hundred ninety-four thousand, nine hundred forty.

Scientific notation

• Scientific notation: 6.4446499494 × 10¹¹

Factors of 644464994940

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 5321

Divisors of 644464994940

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 19 20 26 29 30 36 38 39 45 52 57 58 60 65 76 78 87 90 95 97 114 116 117 130 145 156 171 174 180 190 194 195 228 234 247 260 261 285 290 291 342 348 377 380 388 390 435 468 485 494 522 551 570 580 582 585 684 741 754 780 855 870 873 970 988 1044 1102 1131 1140 1164 1170 1235 1261 1305 1455 1482 1508 1653 1710 1740 1746 1843 1885 1940 2204 2223 2262 2340 2470 2522 2610 2755 2813 2910 2964 3306 3393 3420 3492 3686 3705 3770 3783 4365 4446 4524 4940 4959 5044 5153 5220 5510 5529 5626 5655 5820 6305 6612 6786 7163 7372 7410 7540 7566 8265 8439 8730 8892 9215 9918 10306 11020 11058 11115 11252 11310 11349 12610 13572 14065 14326 14820 15132 15459 16530 16587 16878 16965 17460 18430 18915 19836 20612 21489 22116 22230 22620 22698 23959 24795 25220 25317 25765 27645 28130 28652 30918 33060 33174 33756 33930 35815 36569 36860 37830 42195 42978 44460 45396 46377 47918 49590 50634 51530 53447 55290 56260 56745 61836 64467 66348 66989 67860 71630 71877 73138 75660 77295 82935 84390 85956 92754 95836 97907 99180 101268 103060 106894 107445 109707 110580 113490 119795 126585 128934 133978 143260 143754 146276 149437 154590 160341 165870 168780 182845 185508 195814 200967 213788 214890 215631 219414 226980 231885 239590 253170 257868 267235 267956 287508 293721 298874 309180 320682 322335 329121 331740 334945 359385 365690 391628 401934 429780 431262 438828 448311 463770 479180 481023 489535 499841 506340 534470 548535 587442 597748 602901 641364 644670 658242 669890 694811 718770 731380 747185 801705 803868 862524 881163 896622 927540 962046 979070 999682 1004835 1068940 1078155 1097070 1174884 1205802 1272791 1289340 1316484 1339780 1344933 1389622 1437540 1468605 1494370 1499523 1603410 1645605 1762326 1793244 1924092 1942681 1958140 1999364 2009670 2084433 2156310 2194140 2241555 2405115 2411604 2499205 2545582 2689866 2779244 2839303 2937210 2988740 2999046 3014505 3206820 3291210 3474055 3524652 3818373 3885362 4019340 4168866 4312620 4405815 4483110 4498569 4810230 4998410 5091164 5379732 5678606 5828043 5874420 5998092 6029010 6253299 6363955 6497933 6582420 6724665 6948110 7497615 7636746 7770724 8337732 8517909 8811630 8966220 8997138 9496979 9620460 9713405 9996820 10422165 11357212 11455119 11656086 12058020 12506598 12727910 12995866 13449330 13896220 14196515 14495389 14995230 15273492 17035818 17484129 17623260 17994276 18993958 19091865 19426810 19493799 20844330 22492845 22910238 23312172 25013196 25455820 25553727 25991732 26898660 28393030 28490937 28990778 29140215 29990460 31266495 32489665 34071636 34968258 36910939 37987916 38183730 38853620 38987598 41688660 42589545 43486167 44985690 45820476 47484895 51107454 56786060 56981874 57275595 57981556 58280430 58481397 62532990 64979330 69936516 72476945 73821878 76367460 77975196 85179090 85472811 86972334 87420645 89971380 94969790 97468995 102214908 110732817 113963748 114551190 116560860 116962794 123460727 125065980 127768635 129958660 130458501 142454685 144953890 147643756 170358180 170945622 173944668 174841290 184554695 188440057 189939580 194937990 217430835 221465634 229102380 233925588 246921454 255537270 260917002 275412391 284909370 289907780 292406985 332198451 341891244 349682580 369109390 370382181 376880114 389875980 427364055 434861670 442931268 493842908 511074540 521834004 550824782 553664085 565320171 569818740 584813970 617303635 652292505 664396902 738218780 740764362 753760228 826237173 854728110 869723340 942200285 1101649564 1107328170 1111146543 1130640342 1169627940 1234607270 1304585010 1328793804 1377061955 1481528724 1652474346 1660992255 1695960513 1709456220 1851910905 1884400570 2214656340 2222293086 2261280684 2469214540 2478711519 2609170020 2754123910 2826600855 3304948692 3321984510 3391921026 3580361083 3703821810 3768801140 4131185865 4444586172 4957423038 5508247820 5555732715 5653201710 6643969020 6783842052 7160722166 7407643620 8262371730 8479802565 9914846076 10741083249 11111465430 11306403420 12393557595 14321444332 16524743460 16959605130 17901805415 21482166498 22222930860 24787115190 32223249747 33919210260 35803610830 42964332996 49574230380 53705416245 64446499494 71607221660 107410832490 128892998988 161116248735 214821664980 322232497470 644464994940
• Sum of all divisors σ(n): 2316553948800
• Sum of proper divisors (its aliquot sum) s(n): 1672088953860
• 644464994940 is an abundant number, because the sum of its proper divisors (1672088953860) is greater than itself. Its abundance is 1027623958920

Bases of 644464994940

• Binary: 1001011000001101000110110110101001111100₂
• Hexadecimal: 0x960D1B6A7C
• Base-36: 8829TGN0

Squares and roots of 644464994940

• 644464994940 squared (644464994940²) is 415335129703014225603600
• 644464994940 cubed (644464994940³) is 267668952262457306606372092445784000
• The square root of 644464994940 is 802785.7715106815
• The cube root of 644464994940 is 8637.7330432061

Scales and comparisons

• 644,464,994,940 seconds is equal to 20,491 years, 51 weeks, 4 days, 14 hours, 9 minutes.
• To count from 1 to 644,464,994,940 would take you about forty thousand, nine hundred eighty-three 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 644464994940 cubic inches would be around 719.8 feet tall.

Recreational maths with 644464994940

• 644464994940 backwards is 049499464446
• The number of decimal digits it has is: 12
• The sum of 644464994940's digits is 63
• More coming soon!