72138951680

Names of 72138951680

• Cardinal: 72138951680 can be written as Seventy-two billion, one hundred thirty-eight million, nine hundred fifty-one thousand, six hundred eighty.

Scientific notation

• Scientific notation: 7.213895168 × 10¹⁰

Factors of 72138951680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 3744

Divisors of 72138951680

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 115 128 160 173 184 230 256 320 346 368 460 512 640 692 736 865 920 1024 1280 1384 1472 1730 1840 2560 2768 2944 3460 3541 3680 3979 5120 5536 5888 6920 7082 7360 7958 11072 11776 13840 14164 14720 15916 17705 19895 22144 23552 27680 28328 29440 31832 35410 39790 44288 55360 56656 58880 63664 70820 79580 81443 88576 110720 113312 117760 127328 141640 159160 162886 177152 221440 226624 254656 283280 318320 325772 407215 442880 453248 509312 566560 612593 636640 651544 814430 885760 906496 1018624 1133120 1225186 1273280 1303088 1628860 1812992 2037248 2266240 2450372 2546560 2606176 3062965 3257720 3625984 4074496 4532480 4900744 5093120 5212352 6125930 6515440 9064960 9801488 10186240 10424704 12251860 13030880 14089639 18129920 19602976 20372480 20849408 24503720 26061760 28179278 39205952 41698816 49007440 52123520 56358556 70448195 78411904 83397632 98014880 104247040 112717112 140896390 156823808 196029760 208494080 225434224 281792780 313647616 392059520 416988160 450868448 563585560 627295232 784119040 901736896 1127171120 1568238080 1803473792 2254342240 3136476160 3606947584 4508684480 7213895168 9017368960 14427790336 18034737920 36069475840 72138951680
• Sum of all divisors σ(n): 181667876544
• Sum of proper divisors (its aliquot sum) s(n): 109528924864
• 72138951680 is an abundant number, because the sum of its proper divisors (109528924864) is greater than itself. Its abundance is 37389973184

Bases of 72138951680

• Binary: 1000011001011110100010000110000000000₂
• Hexadecimal: 0x10CBD10C00
• Base-36: X51O3CW

Squares and roots of 72138951680

• 72138951680 squared (72138951680²) is 5204028349489374822400
• 72138951680 cubed (72138951680³) is 375413149645164162986522181632000
• The square root of 72138951680 is 268586.9536667781
• The cube root of 72138951680 is 4162.8421406279

Scales and comparisons

• 72,138,951,680 seconds is equal to 2,293 years, 41 weeks, 2 days, 13 hours, 41 minutes, 20 seconds.
• To count from 1 to 72,138,951,680 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 72138951680 cubic inches would be around 346.9 feet tall.

Recreational maths with 72138951680

• 72138951680 backwards is 08615983127
• The number of decimal digits it has is: 11
• The sum of 72138951680's digits is 50
• More coming soon!