21379292640

Names of 21379292640

• Cardinal: 21379292640 can be written as Twenty-one billion, three hundred seventy-nine million, two hundred ninety-two thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.137929264 × 10¹⁰

Factors of 21379292640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 280

Divisors of 21379292640

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 37 40 45 48 53 60 67 72 74 80 90 96 106 111 113 120 134 144 148 159 160 180 185 201 212 222 226 240 265 268 288 296 318 333 335 339 360 370 402 424 444 452 477 480 530 536 555 565 592 603 636 666 670 678 720 740 795 804 848 888 904 954 1005 1017 1060 1072 1110 1130 1184 1206 1272 1332 1340 1356 1440 1480 1590 1608 1665 1695 1696 1776 1808 1908 1961 2010 2034 2120 2144 2220 2260 2385 2412 2479 2544 2664 2680 2712 2960 3015 3180 3216 3330 3390 3551 3552 3616 3816 3922 4020 4068 4181 4240 4440 4520 4770 4824 4958 5085 5088 5328 5360 5424 5883 5920 5989 6030 6360 6432 6660 6780 7102 7437 7571 7632 7844 8040 8136 8362 8480 8880 9040 9540 9648 9805 9916 10170 10653 10656 10720 10848 11766 11978 12060 12395 12543 12720 13320 13560 14204 14874 15142 15264 15688 16080 16272 16724 17649 17755 17760 17967 18080 19080 19296 19610 19832 20340 20905 21306 22311 22713 23532 23956 24120 24790 25086 25440 26640 27120 28408 29415 29748 29945 30284 31376 31959 32160 32544 33448 35298 35510 35934 37185 37629 37855 38160 39220 39664 40680 41810 42612 44622 45426 47064 47912 48240 49580 50172 53265 53280 53901 54240 56816 58830 59496 59890 60568 62715 62752 63918 66896 68139 70596 71020 71868 74370 75258 75710 76320 78440 79328 81360 83620 85224 88245 89244 89835 90852 94128 95824 96480 99160 100344 106530 107802 111555 113565 113632 117660 118992 119780 121136 125430 127836 131387 133792 136278 141192 142040 143736 148740 150516 151420 156880 159795 162720 167240 170448 176490 178488 179670 181704 188145 188256 191648 198320 200688 213060 215604 221593 223110 227130 235320 237984 239560 242272 250860 255672 262774 269505 272556 280127 282384 284080 287472 297480 301032 302840 313760 319590 334480 340695 340896 352980 356976 359340 363408 376290 394161 396640 401263 401376 426120 431208 443186 446220 454260 470640 479120 501720 511344 525548 539010 545112 560254 564768 568160 574944 594960 602064 605680 639180 656935 664779 668960 681390 705960 713952 718680 726816 752580 788322 802526 840381 852240 862416 886372 892440 908520 941280 958240 1003440 1022688 1051096 1078020 1090224 1107965 1120508 1182483 1189920 1203789 1204128 1211360 1278360 1313870 1329558 1362780 1400635 1411920 1437360 1505160 1576644 1605052 1680762 1704480 1724832 1772744 1784880 1817040 1970805 1994337 2006315 2006880 2102192 2156040 2180448 2215930 2241016 2364966 2407578 2521143 2556720 2627740 2659116 2725560 2801270 2823840 2874720 3010320 3153288 3210104 3323895 3361524 3545488 3569760 3611367 3634080 3941610 3988674 4012630 4201905 4204384 4312080 4431860 4482032 4729932 4815156 5042286 5113440 5255480 5318232 5451120 5602540 5912415 6018945 6020640 6306576 6420208 6647790 6723048 7090976 7222734 7883220 7977348 8025260 8403810 8624160 8863720 8964064 9459864 9630312 9971685 10084572 10510960 10636464 10902240 11205080 11824830 12037890 12605715 12613152 12840416 13295580 13446096 14445468 14846731 15766440 15954696 16050520 16807620 17727440 18056835 18919728 19260624 19943370 20169144 21021920 21272928 22410160 23649660 24075780 25211430 26591160 26892192 28890936 29693462 31532880 31909392 32101040 33615240 35454880 36113670 37839456 38521248 39886740 40338288 44540193 44820320 47299320 48151560 50422860 53182320 57781872 59386924 63065760 63818784 64202080 67230480 72227340 74233655 79773480 80676576 89080386 94598640 96303120 100845720 106364640 115563744 118773848 133620579 134460960 144454680 148467310 159546960 178160772 189197280 192606240 201691440 222700965 237547696 267241158 288909360 296934620 319093920 356321544 403382880 445401930 475095392 534482316 577818720 593869240 668102895 712643088 890803860 1068964632 1187738480 1336205790 1425286176 1781607720 2137929264 2375476960 2672411580 3563215440 4275858528 5344823160 7126430880 10689646320 21379292640
• Sum of all divisors σ(n): 78167509056
• Sum of proper divisors (its aliquot sum) s(n): 56788216416
• 21379292640 is an abundant number, because the sum of its proper divisors (56788216416) is greater than itself. Its abundance is 35408923776

Bases of 21379292640

• Binary: 10011111010010011100001110111100000₂
• Hexadecimal: 0x4FA4E1DE0
• Base-36: 9TKOFS0

Squares and roots of 21379292640

• 21379292640 squared (21379292640²) is 457074153786758169600
• 21379292640 cubed (21379292640³) is 9771922091987467064789151744000
• The square root of 21379292640 is 146216.5949541981
• The cube root of 21379292640 is 2775.4353190945

Scales and comparisons

• 21,379,292,640 seconds is equal to 679 years, 41 weeks, 2 days, 12 hours, 24 minutes.
• To count from 1 to 21,379,292,640 would take you about one thousand, three hundred fifty-nine 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 21379292640 cubic inches would be around 231.3 feet tall.

Recreational maths with 21379292640

• 21379292640 backwards is 04629297312
• 21379292640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21379292640's digits is 45
• More coming soon!