72195390864

Names of 72195390864

• Cardinal: 72195390864 can be written as Seventy-two billion, one hundred ninety-five million, three hundred ninety thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 7.2195390864 × 10¹⁰

Factors of 72195390864

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 22396

Divisors of 72195390864

• Number of divisors d(n): 45
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 22391 44782 67173 89564 134346 179128 201519 268692 358256 403038 537384 806076 1074768 1612152 3224304 501356881 1002713762 1504070643 2005427524 3008141286 4010855048 4512211929 6016282572 8021710096 9024423858 12032565144 18048847716 24065130288 36097695432 72195390864
• Sum of all divisors σ(n): 202055847019
• Sum of proper divisors (its aliquot sum) s(n): 129860456155
• 72195390864 is an abundant number, because the sum of its proper divisors (129860456155) is greater than itself. Its abundance is 57665065291

Bases of 72195390864

• Binary: 1000011001111001011100011110110010000₂
• Hexadecimal: 0x10CF2E3D90
• Base-36: X5Z9S40

Squares and roots of 72195390864

• 72195390864 squared (72195390864²) is 5212174462005734666496
• 72195390864 cubed (72195390864³) is 376294972535862931657153405292544
• 72195390864 is a perfect square number. Its square root is 268692
• The cube root of 72195390864 is 4163.9274820093

Scales and comparisons

• 72,195,390,864 seconds is equal to 2,295 years, 30 weeks, 4 days, 19 hours, 14 minutes, 24 seconds.
• To count from 1 to 72,195,390,864 would take you about four thousand, five hundred ninety-one 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 72195390864 cubic inches would be around 347 feet tall.

Recreational maths with 72195390864

• 72195390864 backwards is 46809359127
• The number of decimal digits it has is: 11
• The sum of 72195390864's digits is 54
• More coming soon!