72137868

Names of 72137868

• Cardinal: 72137868 can be written as Seventy-two million, one hundred thirty-seven thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 7.2137868 × 10⁷

Factors of 72137868

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 125

Divisors of 72137868

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 11 12 17 22 31 33 34 44 51 61 62 66 68 93 102 122 124 132 183 186 187 204 244 289 341 366 372 374 527 561 578 671 682 732 748 867 1023 1037 1054 1122 1156 1342 1364 1581 1734 1891 2013 2046 2074 2108 2244 2684 3111 3162 3179 3468 3782 4026 4092 4148 5673 5797 6222 6324 6358 7564 8052 8959 9537 11346 11407 11594 12444 12716 17391 17629 17918 19074 20801 22692 22814 23188 26877 32147 34221 34782 35258 35836 38148 41602 45628 52887 53754 62403 64294 68442 69564 70516 83204 96441 98549 105774 107508 124806 128588 136884 192882 193919 197098 211548 249612 295647 353617 385764 387838 394196 546499 581757 591294 707234 775676 1060851 1092998 1163514 1182588 1414468 1639497 2121702 2185996 2327028 3278994 4243404 6011489 6557988 12022978 18034467 24045956 36068934 72137868
• Sum of all divisors σ(n): 204653568
• Sum of proper divisors (its aliquot sum) s(n): 132515700
• 72137868 is an abundant number, because the sum of its proper divisors (132515700) is greater than itself. Its abundance is 60377832

Bases of 72137868

• Binary: 100010011001011110010001100₂
• Hexadecimal: 0x44CBC8C
• Base-36: 16Y5XO

Squares and roots of 72137868

• 72137868 squared (72137868²) is 5203871999585424
• 72137868 cubed (72137868³) is 375396231394989371236032
• The square root of 72137868 is 8493.4014387641
• The cube root of 72137868 is 416.2821295619

Scales and comparisons

• 72,137,868 seconds is equal to 2 years, 15 weeks, 1 day, 22 hours, 17 minutes, 48 seconds.
• To count from 1 to 72,137,868 would take you about three 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 72137868 cubic inches would be around 34.7 feet tall.

Recreational maths with 72137868

• 72137868 backwards is 86873127
• The number of decimal digits it has is: 8
• The sum of 72137868's digits is 42
• More coming soon!