81332472

Names of 81332472

• Cardinal: 81332472 can be written as Eighty-one million, three hundred thirty-two thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 8.1332472 × 10⁷

Factors of 81332472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 237

Divisors of 81332472

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 29 39 52 58 78 87 89 101 104 116 156 174 178 202 232 267 303 312 348 356 377 404 534 606 696 712 754 808 1068 1131 1157 1212 1313 1508 2136 2262 2314 2424 2581 2626 2929 3016 3471 3939 4524 4628 5162 5252 5858 6942 7743 7878 8787 8989 9048 9256 10324 10504 11716 13884 15486 15756 17574 17978 20648 23432 26967 27768 30972 31512 33553 35148 35956 38077 53934 61944 67106 70296 71912 76154 100659 107868 114231 116857 134212 152308 201318 215736 228462 233714 260681 268424 304616 350571 402636 456924 467428 521362 701142 782043 805272 913848 934856 1042724 1402284 1564086 2085448 2804568 3128172 3388853 6256344 6777706 10166559 13555412 20333118 27110824 40666236 81332472
• Sum of all divisors σ(n): 231336000
• Sum of proper divisors (its aliquot sum) s(n): 150003528
• 81332472 is an abundant number, because the sum of its proper divisors (150003528) is greater than itself. Its abundance is 68671056

Bases of 81332472

• Binary: 100110110010000100011111000₂
• Hexadecimal: 0x4D908F8
• Base-36: 1CF8JC

Squares and roots of 81332472

• 81332472 squared (81332472²) is 6614971001630784
• 81332472 cubed (81332472³) is 538011943770947694018048
• The square root of 81332472 is 9018.4517518253
• The cube root of 81332472 is 433.2660476725

Scales and comparisons

• 81,332,472 seconds is equal to 2 years, 30 weeks, 3 days, 8 hours, 21 minutes, 12 seconds.
• To count from 1 to 81,332,472 would take you about three 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 81332472 cubic inches would be around 36.1 feet tall.

Recreational maths with 81332472

• 81332472 backwards is 27423318
• The number of decimal digits it has is: 8
• The sum of 81332472's digits is 30
• More coming soon!