72155491020

Names of 72155491020

• Cardinal: 72155491020 can be written as Seventy-two billion, one hundred fifty-five million, four hundred ninety-one thousand and twenty.

Scientific notation

• Scientific notation: 7.215549102 × 10¹⁰

Factors of 72155491020

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 42131

Divisors of 72155491020

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 29 30 36 45 58 60 87 90 116 145 174 180 261 290 331 348 435 522 580 662 870 993 1044 1305 1324 1655 1740 1986 2610 2979 3310 3972 4965 5220 5958 6620 9599 9930 11916 14895 19198 19860 28797 29790 38396 41761 47995 57594 59580 83522 86391 95990 115188 125283 143985 167044 172782 191980 208805 250566 287970 345564 375849 417610 431955 501132 575940 626415 751698 835220 863910 1211069 1252830 1503396 1727820 1879245 2422138 2505660 3633207 3758490 4844276 6055345 7266414 7516980 10899621 12110690 13822891 14532828 18166035 21799242 24221380 27645782 36332070 41468673 43598484 54498105 55291564 69114455 72664140 82937346 108996210 124406019 138228910 165874692 207343365 217992420 248812038 276457820 400863839 414686730 497624076 622030095 801727678 829373460 1202591517 1244060190 1603455356 2004319195 2405183034 2488120380 3607774551 4008638390 4810366068 6012957585 7215549102 8017276780 12025915170 14431098204 18038872755 24051830340 36077745510 72155491020
• Sum of all divisors σ(n): 227108437920
• Sum of proper divisors (its aliquot sum) s(n): 154952946900
• 72155491020 is an abundant number, because the sum of its proper divisors (154952946900) is greater than itself. Its abundance is 82797455880

Bases of 72155491020

• Binary: 1000011001100110011010110101011001100₂
• Hexadecimal: 0x10CCCD6ACC
• Base-36: X5BIL70

Squares and roots of 72155491020

• 72155491020 squared (72155491020²) is 5206414884337300640400
• 72155491020 cubed (72155491020³) is 375671422433194435009422449208000
• The square root of 72155491020 is 268617.7414468377
• The cube root of 72155491020 is 4163.1602554087

Scales and comparisons

• 72,155,491,020 seconds is equal to 2,294 years, 16 weeks, 4 days, 23 hours, 57 minutes.
• To count from 1 to 72,155,491,020 would take you about four thousand, five hundred eighty-eight 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 72155491020 cubic inches would be around 346.9 feet tall.

Recreational maths with 72155491020

• 72155491020 backwards is 02019455127
• 72155491020 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 72155491020's digits is 36
• More coming soon!