72129813140

Names of 72129813140

• Cardinal: 72129813140 can be written as Seventy-two billion, one hundred twenty-nine million, eight hundred thirteen thousand, one hundred forty.

Scientific notation

• Scientific notation: 7.212981314 × 10¹⁰

Factors of 72129813140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 46837566

Divisors of 72129813140

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 46837541 93675082 187350164 234187705 327862787 468375410 515212951 655725574 936750820 1030425902 1311451148 1639313935 2060851804 2576064755 3278627870 3606490657 5152129510 6557255740 7212981314 10304259020 14425962628 18032453285 36064906570 72129813140
• Sum of all divisors σ(n): 188848969344
• Sum of proper divisors (its aliquot sum) s(n): 116719156204
• 72129813140 is an abundant number, because the sum of its proper divisors (116719156204) is greater than itself. Its abundance is 44589343064

Bases of 72129813140

• Binary: 1000011001011010001011001101010010100₂
• Hexadecimal: 0x10CB459A94
• Base-36: X4W880K

Squares and roots of 72129813140

• 72129813140 squared (72129813140²) is 5202709943611316659600
• 72129813140 cubed (72129813140³) is 375270496054304207446316987144000
• The square root of 72129813140 is 268569.9408720195
• The cube root of 72129813140 is 4162.6663506881

Scales and comparisons

• 72,129,813,140 seconds is equal to 2,293 years, 26 weeks, 1 day, 19 hours, 12 minutes, 20 seconds.
• To count from 1 to 72,129,813,140 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 72129813140 cubic inches would be around 346.9 feet tall.

Recreational maths with 72129813140

• 72129813140 backwards is 04131892127
• The number of decimal digits it has is: 11
• The sum of 72129813140's digits is 38
• More coming soon!