71398158728

Names of 71398158728

• Cardinal: 71398158728 can be written as Seventy-one billion, three hundred ninety-eight million, one hundred fifty-eight thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 7.1398158728 × 10¹⁰

Factors of 71398158728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 58

Divisors of 71398158728

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 8 13 26 43 52 86 104 169 172 338 344 559 676 1118 1352 1849 2197 2236 3698 4394 4472 7267 7396 8788 14534 14792 17576 24037 28561 29068 48074 57122 58136 94471 96148 114244 188942 192296 228488 312481 371293 377884 624962 742586 755768 1228123 1249924 1485172 2456246 2499848 2970344 4062253 4826809 4912492 8124506 9653618 9824984 15965599 16249012 19307236 31931198 32498024 38614472 52809289 63862396 105618578 127724792 207552787 211237156 415105574 422474312 686520757 830211148 1373041514 1660422296 2746083028 5492166056 8924769841 17849539682 35699079364 71398158728
• Sum of all divisors σ(n): 148478675985
• Sum of proper divisors (its aliquot sum) s(n): 77080517257
• 71398158728 is an abundant number, because the sum of its proper divisors (77080517257) is greater than itself. Its abundance is 5682358529

Bases of 71398158728

• Binary: 1000010011111101010010111000110001000₂
• Hexadecimal: 0x109FA97188
• Base-36: WSSMBUW

Squares and roots of 71398158728

• 71398158728 squared (71398158728²) is 5097697069748682577984
• 71398158728 cubed (71398158728³) is 363966184533176925771789870244352
• The square root of 71398158728 is 267204.3389018973
• The cube root of 71398158728 is 4148.5437136983

Scales and comparisons

• 71,398,158,728 seconds is equal to 2,270 years, 12 weeks, 3 days, 13 hours, 52 minutes, 8 seconds.
• To count from 1 to 71,398,158,728 would take you about four thousand, five hundred forty 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 71398158728 cubic inches would be around 345.7 feet tall.

Recreational maths with 71398158728

• 71398158728 backwards is 82785189317
• The number of decimal digits it has is: 11
• The sum of 71398158728's digits is 59
• More coming soon!