72215169138

Names of 72215169138

• Cardinal: 72215169138 can be written as Seventy-two billion, two hundred fifteen million, one hundred sixty-nine thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 7.2215169138 × 10¹⁰

Factors of 72215169138

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3032479

Divisors of 72215169138

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 49 54 63 81 98 126 147 162 189 243 294 378 441 486 567 882 1134 1323 1701 2646 3402 3969 7938 11907 23814 3032467 6064934 9097401 18194802 21227269 27292203 42454538 54584406 63681807 81876609 127363614 148590883 163753218 191045421 245629827 297181766 382090842 445772649 491259654 573136263 736889481 891545298 1146272526 1337317947 1473778962 1719408789 2674635894 3438817578 4011953841 5158226367 8023907682 10316452734 12035861523 24071723046 36107584569 72215169138
• Sum of all divisors σ(n): 188752938192
• Sum of proper divisors (its aliquot sum) s(n): 116537769054
• 72215169138 is an abundant number, because the sum of its proper divisors (116537769054) is greater than itself. Its abundance is 44322599916

Bases of 72215169138

• Binary: 1000011010000010111000000100001110010₂
• Hexadecimal: 0x10D05C0872
• Base-36: X6B1P4I

Squares and roots of 72215169138

• 72215169138 squared (72215169138²) is 5215030653629947663044
• 72215169138 cubed (72215169138³) is 376604320711741364148810291936072
• The square root of 72215169138 is 268728.8022114489
• The cube root of 72215169138 is 4164.3076899343

Scales and comparisons

• 72,215,169,138 seconds is equal to 2,296 years, 11 weeks, 2 days, 17 hours, 12 minutes, 18 seconds.
• To count from 1 to 72,215,169,138 would take you about four thousand, five hundred ninety-two 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 72215169138 cubic inches would be around 347 feet tall.

Recreational maths with 72215169138

• 72215169138 backwards is 83196151227
• The number of decimal digits it has is: 11
• The sum of 72215169138's digits is 45
• More coming soon!