81742732752

Names of 81742732752

• Cardinal: 81742732752 can be written as Eighty-one billion, seven hundred forty-two million, seven hundred thirty-two thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 8.1742732752 × 10¹⁰

Factors of 81742732752

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 15623725

Divisors of 81742732752

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 48 109 218 327 436 654 872 1308 1744 2616 5232 15623611 31247222 46870833 62494444 93741666 124988888 187483332 249977776 374966664 749933328 1702973599 3405947198 5108920797 6811894396 10217841594 13623788792 20435683188 27247577584 40871366376 81742732752
• Sum of all divisors σ(n): 213106067680
• Sum of proper divisors (its aliquot sum) s(n): 131363334928
• 81742732752 is an abundant number, because the sum of its proper divisors (131363334928) is greater than itself. Its abundance is 49620602176

Bases of 81742732752

• Binary: 1001100001000001111110001110111010000₂
• Hexadecimal: 0x13083F1DD0
• Base-36: 11JVIG9C

Squares and roots of 81742732752

• 81742732752 squared (81742732752²) is 6681874357764893493504
• 81742732752 cubed (81742732752³) is 546194669909217324887241120043008
• The square root of 81742732752 is 285906.8602744607
• The cube root of 81742732752 is 4339.9332592539

Scales and comparisons

• 81,742,732,752 seconds is equal to 2,599 years, 8 weeks, 4 days, 10 hours, 39 minutes, 12 seconds.
• To count from 1 to 81,742,732,752 would take you about five thousand, one hundred ninety-eight 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 81742732752 cubic inches would be around 361.7 feet tall.

Recreational maths with 81742732752

• 81742732752 backwards is 25723724718
• 81742732752 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81742732752's digits is 48
• More coming soon!