64728688640

Names of 64728688640

• Cardinal: 64728688640 can be written as Sixty-four billion, seven hundred twenty-eight million, six hundred eighty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.472868864 × 10¹⁰

Factors of 64728688640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 481

Divisors of 64728688640

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 17 20 22 28 32 34 35 40 44 55 56 64 68 70 77 80 85 88 110 112 119 121 128 136 140 154 160 170 176 187 220 224 238 242 256 272 280 308 320 340 352 374 385 439 440 448 476 484 512 544 560 595 605 616 640 680 704 748 770 847 878 880 896 935 952 968 1024 1088 1120 1190 1210 1232 1280 1309 1360 1408 1496 1540 1694 1756 1760 1792 1870 1904 1936 2048 2057 2176 2195 2240 2380 2420 2464 2560 2618 2720 2816 2992 3073 3080 3388 3512 3520 3584 3740 3808 3872 4114 4235 4352 4390 4480 4760 4829 4840 4928 5120 5236 5440 5632 5984 6146 6160 6545 6776 7024 7040 7168 7463 7480 7616 7744 8228 8470 8704 8780 8960 9520 9658 9680 9856 10240 10285 10472 10880 11264 11968 12292 12320 13090 13552 14048 14080 14336 14399 14926 14960 15232 15365 15488 16456 16940 17408 17560 17920 19040 19316 19360 19712 20570 20944 21760 22528 23936 24145 24584 24640 26180 27104 28096 28160 28798 29852 29920 30464 30730 30976 32912 33803 33880 34816 35120 35840 37315 38080 38632 38720 39424 41140 41888 43520 47872 48290 49168 49280 52241 52360 53119 54208 56192 56320 57596 59704 59840 60928 61460 61952 65824 67606 67760 70240 71680 71995 74630 76160 77264 77440 78848 82093 82280 83776 87040 95744 96580 98336 98560 104482 104720 106238 108416 112384 112640 115192 119408 119680 121856 122920 123904 131648 135212 135520 140480 143990 149260 152320 154528 154880 157696 164186 164560 167552 169015 174080 191488 193160 196672 197120 208964 209440 212476 216832 224768 230384 238816 239360 243712 245840 247808 261205 263296 265595 270424 271040 280960 287980 298520 304640 309056 309760 328372 329120 335104 338030 371833 382976 386320 393344 394240 410465 417928 418880 424952 433664 449536 460768 477632 478720 491680 522410 526592 531190 540848 542080 561920 574651 575960 597040 609280 618112 619520 656744 658240 670208 676060 743666 772640 786688 788480 820930 835856 837760 849904 867328 899072 903023 921536 955264 957440 983360 1044820 1053184 1062380 1081696 1084160 1123840 1149302 1151920 1194080 1218560 1236224 1239040 1313488 1316480 1340416 1352120 1487332 1545280 1573376 1641860 1671712 1675520 1699808 1734656 1806046 1843072 1859165 1910528 1914880 1966720 2089640 2106368 2124760 2163392 2168320 2247680 2298604 2303840 2388160 2472448 2626976 2632960 2680832 2704240 2873255 2974664 3090560 3146752 3283720 3343424 3351040 3399616 3612092 3686144 3718330 3821056 3933440 4179280 4212736 4249520 4326784 4336640 4495360 4515115 4597208 4607680 4776320 4944896 5253952 5265920 5408480 5746510 5949328 6181120 6293504 6321161 6567440 6686848 6702080 6799232 7224184 7372288 7436660 7642112 7866880 8358560 8499040 8653568 8673280 9030230 9194416 9215360 9552640 9889792 10507904 10531840 10816960 11493020 11898656 12362240 12642322 13134880 13373696 13404160 13598464 14448368 14744576 14873320 15284224 15733760 16717120 16998080 17307136 18060460 18388832 18430720 19105280 21015808 21063680 21633920 22986040 23797312 24724480 25284644 26269760 26747392 27196928 28896736 29489152 29746640 31467520 31605805 33434240 33996160 34614272 36120920 36777664 36861440 38210560 42031616 43267840 45972080 47594624 49448960 50569288 52539520 53494784 54393856 57793472 59493280 63211610 66868480 67992320 69228544 72241840 73555328 73722880 76421120 84063232 86535680 91944160 95189248 101138576 105079040 106989568 108787712 115586944 118986560 126423220 133736960 135984640 144483680 147110656 147445760 168126464 173071360 183888320 190378496 202277152 210158080 231173888 237973120 252846440 267473920 271969280 288967360 294221312 346142720 367776640 380756992 404554304 420316160 462347776 475946240 505692880 534947840 543938560 577934720 588442624 735553280 761513984 809108608 840632320 924695552 951892480 1011385760 1155869440 1176885248 1471106560 1618217216 1849391104 1903784960 2022771520 2311738880 2942213120 3236434432 3807569920 4045543040 4623477760 5884426240 6472868864 8091086080 9246955520 12945737728 16182172160 32364344320 64728688640
• Sum of all divisors σ(n): 207048441600
• Sum of proper divisors (its aliquot sum) s(n): 142319752960
• 64728688640 is an abundant number, because the sum of its proper divisors (142319752960) is greater than itself. Its abundance is 77591064320

Bases of 64728688640

• Binary: 111100010010001000010110100000000000₂
• Hexadecimal: 0xF12216800
• Base-36: TQHSFSW

Squares and roots of 64728688640

• 64728688640 squared (64728688640²) is 4189803133054065049600
• 64728688640 cubed (64728688640³) is 271200462462353068881864556544000
• The square root of 64728688640 is 254418.3339305561
• The cube root of 64728688640 is 4015.1237592427

Scales and comparisons

• 64,728,688,640 seconds is equal to 2,058 years, 8 weeks, 6 days, 15 hours, 17 minutes, 20 seconds.
• To count from 1 to 64,728,688,640 would take you about four thousand, one hundred sixteen 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 64728688640 cubic inches would be around 334.6 feet tall.

Recreational maths with 64728688640

• 64728688640 backwards is 04688682746
• The number of decimal digits it has is: 11
• The sum of 64728688640's digits is 59
• More coming soon!