72138493518

Names of 72138493518

• Cardinal: 72138493518 can be written as Seventy-two billion, one hundred thirty-eight million, four hundred ninety-three thousand, five hundred eighteen.

Scientific notation

• Scientific notation: 7.2138493518 × 10¹⁰

Factors of 72138493518

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1127

Divisors of 72138493518

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 31 37 39 42 62 74 78 91 93 111 127 182 186 217 222 254 259 273 381 403 434 481 518 546 651 762 777 806 889 907 962 1147 1209 1302 1443 1554 1651 1778 1814 2294 2418 2667 2721 2821 2886 3302 3367 3441 3937 4699 4953 5334 5442 5642 6349 6734 6882 7874 8029 8463 9398 9906 10101 11557 11791 11811 12698 14097 14911 16058 16926 19047 20202 23114 23582 23622 24087 27559 28117 28194 29822 32893 33559 34671 35373 38094 44733 48174 51181 55118 56234 61087 65786 67118 69342 70746 82537 82677 84351 89466 98679 100677 102362 104377 115189 122174 145669 153543 165074 165354 168702 183261 196819 197358 201354 208754 230378 234913 247611 291338 307086 313131 345567 358267 365521 366522 393638 427609 436267 437007 469826 495222 590457 626262 691134 704739 716534 731042 806323 855218 872534 874014 1019683 1040329 1074801 1096563 1180914 1282827 1308801 1409478 1497457 1612646 1893697 2039366 2080658 2149602 2193126 2418969 2558647 2565654 2617602 2994914 3053869 3059049 3120987 3570859 3787394 4261993 4492371 4837938 5117294 5681091 6107738 6118098 6241974 7141718 7282303 7675941 8523986 8984742 9161607 10482199 10712577 11362182 12785979 13255879 13524277 14564606 15351882 18323214 20964398 21425154 21846909 24996013 25571958 26511758 27048554 29833951 31446597 39767637 40572831 43693818 46421167 49992026 55405909 59667902 62893194 74988039 79535274 81145662 89501853 92842334 94669939 110811818 132121783 139263501 149976078 166217727 179003706 189339878 264243566 278527002 284009817 324948169 332435454 387841363 396365349 568019634 649896338 775682726 792730698 924852481 974844507 1163524089 1717583179 1849704962 1949689014 2327048178 2774557443 3435166358 5152749537 5549114886 10305499074 12023082253 24046164506 36069246759 72138493518
• Sum of all divisors σ(n): 189945348096
• Sum of proper divisors (its aliquot sum) s(n): 117806854578
• 72138493518 is an abundant number, because the sum of its proper divisors (117806854578) is greater than itself. Its abundance is 45668361060

Bases of 72138493518

• Binary: 1000011001011110010100000111001001110₂
• Hexadecimal: 0x10CBCA0E4E
• Base-36: X51E9U6

Squares and roots of 72138493518

• 72138493518 squared (72138493518²) is 5203962247046528016324
• 72138493518 cubed (72138493518³) is 375405996826482675949994272187832
• The square root of 72138493518 is 268586.1007535573
• The cube root of 72138493518 is 4162.8333277279

Scales and comparisons

• 72,138,493,518 seconds is equal to 2,293 years, 40 weeks, 4 days, 6 hours, 25 minutes, 18 seconds.
• To count from 1 to 72,138,493,518 would take you about four thousand, five hundred eighty-seven 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 72138493518 cubic inches would be around 346.9 feet tall.

Recreational maths with 72138493518

• 72138493518 backwards is 81539483127
• The number of decimal digits it has is: 11
• The sum of 72138493518's digits is 51
• More coming soon!