21555985920

Names of 21555985920

• Cardinal: 21555985920 can be written as Twenty-one billion, five hundred fifty-five million, nine hundred eighty-five thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.155598592 × 10¹⁰

Factors of 21555985920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 184

Divisors of 21555985920

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 49 56 60 64 70 80 84 96 98 105 112 120 128 140 147 160 167 168 192 196 210 224 240 245 256 280 294 320 334 336 343 384 392 420 448 480 490 501 512 560 588 640 668 672 686 735 768 784 835 840 896 960 980 1002 1029 1120 1169 1176 1280 1336 1344 1372 1470 1536 1568 1670 1680 1715 1792 1920 1960 2004 2058 2240 2338 2352 2401 2505 2560 2672 2688 2744 2940 3136 3340 3360 3430 3507 3584 3840 3920 4008 4116 4480 4676 4704 4802 5010 5145 5344 5376 5488 5845 5880 6272 6680 6720 6860 7014 7203 7680 7840 8016 8183 8232 8960 9352 9408 9604 10020 10290 10688 10752 10976 11690 11760 12005 12544 13360 13440 13720 14028 14406 15680 16032 16366 16464 16807 17535 17920 18704 18816 19208 20040 20580 21376 21952 23380 23520 24010 24549 25088 26720 26880 27440 28056 28812 31360 32064 32732 32928 33614 35070 36015 37408 37632 38416 40080 40915 41160 42752 43904 46760 47040 48020 49098 50421 53440 53760 54880 56112 57281 57624 62720 64128 65464 65856 67228 70140 72030 74816 75264 76832 80160 81830 82320 84035 85504 87808 93520 94080 96040 98196 100842 106880 109760 112224 114562 115248 122745 125440 128256 130928 131712 134456 140280 144060 149632 153664 160320 163660 164640 168070 171843 175616 187040 188160 192080 196392 201684 213760 219520 224448 229124 230496 245490 252105 256512 261856 263424 268912 280560 286405 288120 299264 307328 320640 327320 329280 336140 343686 374080 376320 384160 392784 400967 403368 427520 439040 448896 458248 460992 490980 504210 523712 526848 537824 561120 572810 576240 598528 614656 641280 654640 658560 672280 687372 748160 768320 785568 801934 806736 859215 878080 897792 916496 921984 981960 1008420 1047424 1075648 1122240 1145620 1152480 1202901 1229312 1282560 1309280 1317120 1344560 1374744 1496320 1536640 1571136 1603868 1613472 1718430 1795584 1832992 1843968 1963920 2004835 2016840 2094848 2151296 2244480 2291240 2304960 2405802 2618560 2634240 2689120 2749488 2806769 2992640 3073280 3142272 3207736 3226944 3436860 3665984 3687936 3927840 4009670 4033680 4189696 4302592 4488960 4582480 4609920 4811604 5237120 5378240 5498976 5613538 6014505 6146560 6284544 6415472 6453888 6873720 7331968 7855680 8019340 8067360 8420307 8605184 8977920 9164960 9219840 9623208 10474240 10756480 10997952 11227076 12029010 12569088 12830944 12907776 13747440 14033845 14663936 15711360 16038680 16134720 16840614 18329920 18439680 19246416 20948480 21512960 21995904 22454152 24058020 25661888 25815552 27494880 28067690 29327872 31422720 32077360 32269440 33681228 36659840 38492832 42101535 43025920 43991808 44908304 48116040 51323776 54989760 56135380 62845440 64154720 64538880 67362456 73319680 76985664 84203070 87983616 89816608 96232080 102647552 109979520 112270760 128309440 129077760 134724912 146639360 153971328 168406140 179633216 192464160 205295104 219959040 224541520 256618880 269449824 307942656 336812280 359266432 384928320 439918080 449083040 513237760 538899648 615885312 673624560 718532864 769856640 898166080 1026475520 1077799296 1347249120 1437065728 1539713280 1796332160 2155598592 2694498240 3079426560 3592664320 4311197184 5388996480 7185328640 10777992960 21555985920
• Sum of all divisors σ(n): 80877823488
• Sum of proper divisors (its aliquot sum) s(n): 59321837568
• 21555985920 is an abundant number, because the sum of its proper divisors (59321837568) is greater than itself. Its abundance is 37765851648

Bases of 21555985920

• Binary: 10100000100110101100011111000000000₂
• Hexadecimal: 0x504D63E00
• Base-36: 9WHVL6O

Squares and roots of 21555985920

• 21555985920 squared (21555985920²) is 464660528983238246400
• 21555985920 cubed (21555985920³) is 10016215820342435555403890688000
• The square root of 21555985920 is 146819.5692678603
• The cube root of 21555985920 is 2783.0603910665

Scales and comparisons

• 21,555,985,920 seconds is equal to 685 years, 21 weeks, 3 days, 13 hours, 52 minutes.
• To count from 1 to 21,555,985,920 would take you about one thousand, three hundred seventy 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 21555985920 cubic inches would be around 231.9 feet tall.

Recreational maths with 21555985920

• 21555985920 backwards is 02958955512
• The number of decimal digits it has is: 11
• The sum of 21555985920's digits is 51
• More coming soon!