21053664240

Names of 21053664240

• Cardinal: 21053664240 can be written as Twenty-one billion, fifty-three million, six hundred sixty-four thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.105366424 × 10¹⁰

Factors of 21053664240

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 874

Divisors of 21053664240

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 149 151 168 210 240 280 298 302 336 420 447 453 557 560 596 604 745 755 840 894 906 1043 1057 1114 1192 1208 1490 1510 1671 1680 1788 1812 2086 2114 2228 2235 2265 2384 2416 2785 2980 3020 3129 3171 3342 3576 3624 3899 4172 4228 4456 4470 4530 5215 5285 5570 5960 6040 6258 6342 6684 7152 7248 7798 8344 8355 8456 8912 8940 9060 10430 10570 11140 11697 11920 12080 12516 12684 13368 15596 15645 15855 16688 16710 16912 17880 18120 19495 20860 21140 22280 22499 23394 25032 25368 26736 31192 31290 31710 33420 35760 36240 38990 41720 42280 44560 44998 46788 50064 50736 58485 62384 62580 63420 66840 67497 77980 82993 83440 84107 84560 89996 93576 112495 116970 125160 126840 133680 134994 155960 157493 165986 168214 179992 187152 224990 233940 248979 250320 252321 253680 269988 311920 314986 331972 336428 337485 359984 414965 420535 449980 467880 472479 497958 504642 539976 580951 588749 629972 663944 672856 674970 787465 829930 841070 899960 935760 944958 995916 1009284 1079952 1161902 1177498 1244895 1259944 1261605 1327888 1345712 1349940 1574930 1659860 1682140 1742853 1766247 1799920 1889916 1991832 2018568 2323804 2354996 2362395 2489790 2519888 2523210 2699880 2904755 2943745 3149860 3319720 3364280 3485706 3532494 3779832 3983664 4037136 4647608 4709992 4724790 4979580 5046420 5399760 5809510 5887490 6299720 6639440 6728560 6971412 7064988 7559664 8714265 8831235 9295216 9419984 9449580 9959160 10092840 11619020 11774980 12531943 12599440 13942824 14129976 17428530 17662470 18899160 19918320 20185680 23238040 23549960 25063886 27885648 28259952 34857060 35324940 37595829 37798320 46476080 47099920 50127772 62659715 69714120 70649880 75191658 87723601 100255544 125319430 139428240 141299760 150383316 175447202 187979145 200511088 250638860 263170803 300766632 350894404 375958290 438618005 501277720 526341606 601533264 701788808 751916580 877236010 1002555440 1052683212 1315854015 1403577616 1503833160 1754472020 2105366424 2631708030 3007666320 3508944040 4210732848 5263416060 7017888080 10526832120 21053664240
• Sum of all divisors σ(n): 75723724800
• Sum of proper divisors (its aliquot sum) s(n): 54670060560
• 21053664240 is an abundant number, because the sum of its proper divisors (54670060560) is greater than itself. Its abundance is 33616396320

Bases of 21053664240

• Binary: 10011100110111001010110101111110000₂
• Hexadecimal: 0x4E6E56BF0
• Base-36: 9O6T3AO

Squares and roots of 21053664240

• 21053664240 squared (21053664240²) is 443256777930654777600
• 21053664240 cubed (21053664240³) is 9332179374656247690942273024000
• The square root of 21053664240 is 145098.8085409387
• The cube root of 21053664240 is 2761.2722657809

Scales and comparisons

• 21,053,664,240 seconds is equal to 669 years, 22 weeks, 6 days, 16 hours, 4 minutes.
• To count from 1 to 21,053,664,240 would take you about one thousand, three hundred thirty-eight 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 21053664240 cubic inches would be around 230.1 feet tall.

Recreational maths with 21053664240

• 21053664240 backwards is 04246635012
• The number of decimal digits it has is: 11
• The sum of 21053664240's digits is 33
• More coming soon!