72909720324

Names of 72909720324

• Cardinal: 72909720324 can be written as Seventy-two billion, nine hundred nine million, seven hundred twenty thousand, three hundred twenty-four.

Scientific notation

• Scientific notation: 7.2909720324 × 10¹⁰

Factors of 72909720324

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2155

Divisors of 72909720324

• Number of divisors d(n): 135
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 49 54 63 81 84 98 108 126 147 162 189 196 252 294 324 378 441 567 588 756 882 1134 1323 1764 2143 2268 2646 3969 4286 5292 6429 7938 8572 12858 15001 15876 19287 25716 30002 38574 45003 57861 60004 77148 90006 105007 115722 135009 173583 180012 210014 231444 270018 315021 347166 405027 420028 540036 630042 694332 810054 945063 1215081 1260084 1620108 1890126 2430162 2835189 3780252 4592449 4860324 5670378 8505567 9184898 11340756 13777347 17011134 18369796 27554694 32147143 34022268 41332041 55109388 64294286 82664082 96441429 123996123 128588572 165328164 192882858 225030001 247992246 289324287 371988369 385765716 450060002 495984492 578648574 675090003 743976738 867972861 900120004 1157297148 1350180006 1487953476 1735945722 2025270009 2603918583 2700360012 3471891444 4050540018 5207837166 6075810027 8101080036 10415674332 12151620054 18227430081 24303240108 36454860162 72909720324
• Sum of all divisors σ(n): 221822355447
• Sum of proper divisors (its aliquot sum) s(n): 148912635123
• 72909720324 is an abundant number, because the sum of its proper divisors (148912635123) is greater than itself. Its abundance is 76002914799

Bases of 72909720324

• Binary: 1000011111001110000100000101100000100₂
• Hexadecimal: 0x10F9C20B04
• Base-36: XHSKC90

Squares and roots of 72909720324

• 72909720324 squared (72909720324²) is 5315827317723898664976
• 72909720324 cubed (72909720324³) is 387575483025928539914317134172224
• 72909720324 is a perfect square number. Its square root is 270018
• The cube root of 72909720324 is 4177.6156117419

Scales and comparisons

• 72,909,720,324 seconds is equal to 2,318 years, 15 weeks, 5 days, 12 hours, 5 minutes, 24 seconds.
• To count from 1 to 72,909,720,324 would take you about four thousand, six hundred thirty-six 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 72909720324 cubic inches would be around 348.1 feet tall.

Recreational maths with 72909720324

• 72909720324 backwards is 42302790927
• The number of decimal digits it has is: 11
• The sum of 72909720324's digits is 45
• More coming soon!