21309812370

Names of 21309812370

• Cardinal: 21309812370 can be written as Twenty-one billion, three hundred nine million, eight hundred twelve thousand, three hundred seventy.

Scientific notation

• Scientific notation: 2.130981237 × 10¹⁰

Factors of 21309812370

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1018

Divisors of 21309812370

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 11 14 15 18 21 22 27 30 33 35 42 45 49 54 55 63 66 70 77 90 98 99 105 110 126 135 147 154 165 181 189 198 210 231 245 270 294 297 315 330 362 378 385 441 462 490 495 539 543 594 630 693 735 770 809 882 905 945 990 1078 1086 1155 1267 1323 1386 1470 1485 1617 1618 1629 1810 1890 1991 2079 2205 2310 2427 2534 2646 2695 2715 2970 3234 3258 3465 3801 3982 4045 4158 4410 4851 4854 4887 5390 5430 5663 5973 6335 6615 6930 7281 7602 8085 8090 8145 8869 8899 9702 9774 9955 10395 11326 11403 11946 12135 12670 13230 13937 14553 14562 16170 16290 16989 17738 17798 17919 19005 19910 20790 21843 22806 24255 24270 24435 26607 26697 27874 28315 29106 29865 33978 34209 35838 36405 38010 39641 41811 43686 44345 44495 48510 48870 50967 53214 53394 53757 56630 57015 59730 62293 68418 69685 72765 72810 79282 79821 80091 83622 84945 88690 88990 89595 97559 101934 107514 109215 114030 118923 124586 125433 133035 133485 139370 145530 146429 152901 159642 160182 169890 171045 179190 186879 195118 198205 209055 218430 237846 239463 240273 250866 254835 266070 266970 268785 292677 292858 305802 311465 342090 356769 373758 376299 396410 399105 400455 418110 436051 439287 478926 480546 487795 509670 537570 560637 585354 594615 622930 627165 713538 732145 752598 764505 798210 800910 872102 878031 878574 934395 975590 1025003 1070307 1121274 1189230 1197315 1201365 1254330 1308153 1317861 1463385 1464290 1529010 1610719 1681911 1756062 1783845 1868790 1881495 2050006 2140614 2180255 2196435 2394630 2402730 2616306 2634093 2635722 2803185 2926770 3075009 3221438 3363822 3567690 3762990 3924459 3953583 4360510 4390155 4392870 4832157 5125015 5268186 5351535 5606370 6150018 6540765 6589305 7175021 7848918 7907166 8053595 8409555 8780310 9225027 9664314 10250030 10703070 11275033 11773377 13081530 13170465 13178610 14350042 14496471 15375045 16107190 16819110 18450054 19622295 19767915 21525063 22550066 23546754 24160785 26340930 27675081 28992942 30750090 33825099 35875105 39244590 39535830 43050126 43489413 46125135 48321570 55350162 56375165 58866885 64575189 67650198 71750210 72482355 78925231 86978826 92250270 101475297 107625315 112750330 117733770 129150378 138375405 144964710 157850462 169125495 193725567 202950594 215250630 217447065 236775693 276750810 304425891 322875945 338250990 387451134 394626155 434894130 473551386 507376485 608851782 645751890 710327079 789252310 968627835 1014752970 1183878465 1420654158 1522129455 1937255670 2130981237 2367756930 3044258910 3551635395 4261962474 7103270790 10654906185 21309812370
• Sum of all divisors σ(n): 72601401600
• Sum of proper divisors (its aliquot sum) s(n): 51291589230
• 21309812370 is an abundant number, because the sum of its proper divisors (51291589230) is greater than itself. Its abundance is 29981776860

Bases of 21309812370

• Binary: 10011110110001010011110111010010010₂
• Hexadecimal: 0x4F629EE92
• Base-36: 9SFB8GI

Squares and roots of 21309812370

• 21309812370 squared (21309812370²) is 454108103244605016900
• 21309812370 cubed (21309812370³) is 9676958475839121124899679053000
• The square root of 21309812370 is 145978.8079482773
• The cube root of 21309812370 is 2772.4254397517

Scales and comparisons

• 21,309,812,370 seconds is equal to 677 years, 30 weeks, 3 days, 8 hours, 19 minutes, 30 seconds.
• To count from 1 to 21,309,812,370 would take you about one thousand, three hundred fifty-five 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 21309812370 cubic inches would be around 231 feet tall.

Recreational maths with 21309812370

• 21309812370 backwards is 07321890312
• The number of decimal digits it has is: 11
• The sum of 21309812370's digits is 36
• More coming soon!