138015189920

Names of 138015189920

• Cardinal: 138015189920 can be written as One hundred thirty-eight billion, fifteen million, one hundred eighty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.3801518992 × 10¹¹

Factors of 138015189920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1671

Divisors of 138015189920

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 16 20 29 32 40 58 73 80 116 145 146 160 232 290 292 331 365 464 580 584 662 730 928 1160 1168 1231 1324 1460 1655 2117 2320 2336 2462 2648 2920 3310 4234 4640 4924 5296 5840 6155 6620 8468 9599 9848 10585 10592 11680 12310 13240 16936 19198 19696 21170 24163 24620 26480 33872 35699 38396 39392 42340 47995 48326 49240 52960 67744 71398 76792 84680 89863 95990 96652 98480 120815 142796 153584 169360 178495 179726 191980 193304 196960 241630 285592 307168 338720 356990 359452 383960 386608 407461 449315 483260 571184 700727 713980 718904 767920 773216 814922 898630 966520 1142368 1401454 1427960 1437808 1535840 1629844 1797260 1933040 2037305 2606027 2802908 2855920 2875616 3259688 3503635 3594520 3866080 4074610 5212054 5605816 5711840 6519376 7007270 7189040 8149220 10424108 11211632 11816369 13030135 13038752 14014540 14378080 16298440 20848216 22423264 23632738 26060270 28029080 29744653 32596880 41696432 47265476 52120540 56058160 59081845 59489306 65193760 83392864 94530952 104241080 112116320 118163690 118978612 148723265 189061904 208482160 236327380 237957224 297446530 378123808 416964320 472654760 475914448 594893060 862594937 945309520 951828896 1189786120 1725189874 1890619040 2379572240 3450379748 4312974685 4759144480 6900759496 8625949370 13801518992 17251898740 27603037984 34503797480 69007594960 138015189920
• Sum of all divisors σ(n): 343236579840
• Sum of proper divisors (its aliquot sum) s(n): 205221389920
• 138015189920 is an abundant number, because the sum of its proper divisors (205221389920) is greater than itself. Its abundance is 67206200000

Bases of 138015189920

• Binary: 10000000100010010110001010101110100000₂
• Hexadecimal: 0x202258ABA0
• Base-36: 1REIOI3K

Squares and roots of 138015189920

• 138015189920 squared (138015189920²) is 19048192648653669606400
• 138015189920 cubed (138015189920³) is 2628939926036684043032227647488000
• The square root of 138015189920 is 371503.9568026161
• The cube root of 138015189920 is 5167.8388497039

Scales and comparisons

• 138,015,189,920 seconds is equal to 4,388 years, 23 weeks, 5 days, 45 minutes, 20 seconds.
• To count from 1 to 138,015,189,920 would take you about eight thousand, seven hundred seventy-six 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 138015189920 cubic inches would be around 430.7 feet tall.

Recreational maths with 138015189920

• 138015189920 backwards is 029981510831
• The number of decimal digits it has is: 12
• The sum of 138015189920's digits is 47
• More coming soon!