72138100128

Names of 72138100128

• Cardinal: 72138100128 can be written as Seventy-two billion, one hundred thirty-eight million, one hundred thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 7.2138100128 × 10¹⁰

Factors of 72138100128

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 55547

Divisors of 72138100128

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 12 16 19 23 24 31 32 38 46 48 57 62 69 76 92 93 96 114 124 138 152 184 186 228 248 276 304 368 372 437 456 496 552 589 608 713 736 744 874 912 992 1104 1178 1311 1426 1488 1748 1767 1824 2139 2208 2356 2622 2852 2976 3496 3534 4278 4712 5244 5704 6992 7068 8556 9424 10488 11408 13547 13984 14136 17112 18848 20976 22816 27094 28272 34224 40641 41952 54188 55469 56544 68448 81282 108376 110938 162564 166407 216752 221876 325128 332814 433504 443752 650256 665628 887504 1053911 1275787 1300512 1331256 1719539 1775008 2107822 2551574 2662512 3161733 3439078 3827361 4215644 5103148 5158617 5325024 6323466 6878156 7654722 8431288 10206296 10317234 12646932 13756312 15309444 16862576 20412592 20634468 24239953 25293864 27512624 30618888 32671241 33725152 39549397 40825184 41268936 48479906 50587728 55025248 61237776 65342482 72719859 79098794 82537872 96959812 98013723 101175456 118648191 122475552 130684964 145439718 158197588 165075744 193919624 196027446 237296382 261369928 290879436 316395176 387839248 392054892 474592764 522739856 581758872 632790352 751438543 775678496 784109784 949185528 1045479712 1163517744 1265580704 1502877086 1568219568 1898371056 2254315629 2327035488 3005754172 3136439136 3796742112 4508631258 6011508344 9017262516 12023016688 18034525032 24046033376 36069050064 72138100128
• Sum of all divisors σ(n): 214708838400
• Sum of proper divisors (its aliquot sum) s(n): 142570738272
• 72138100128 is an abundant number, because the sum of its proper divisors (142570738272) is greater than itself. Its abundance is 70432638144

Bases of 72138100128

• Binary: 1000011001011110001000000110110100000₂
• Hexadecimal: 0x10CBC40DA0
• Base-36: X515UAO

Squares and roots of 72138100128

• 72138100128 squared (72138100128²) is 5203905490077353616384
• 72138100128 cubed (72138100128³) is 375399855299849045643971893297152
• The square root of 72138100128 is 268585.3684175667
• The cube root of 72138100128 is 4162.8257607091

Scales and comparisons

• 72,138,100,128 seconds is equal to 2,293 years, 39 weeks, 6 days, 17 hours, 8 minutes, 48 seconds.
• To count from 1 to 72,138,100,128 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 72138100128 cubic inches would be around 346.9 feet tall.

Recreational maths with 72138100128

• 72138100128 backwards is 82100183127
• The number of decimal digits it has is: 11
• The sum of 72138100128's digits is 33
• More coming soon!