81682920
81,682,920 is an even composite number composed of five prime numbers multiplied together.
81682920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81682920:
23 × 32 × 5 × 11 × 20627
(2 × 2 × 2 × 3 × 3 × 5 × 11 × 20627)See below for interesting mathematical facts about the number 81682920 from the Numbermatics database.
Names of 81682920
- Cardinal: 81682920 can be written as Eighty-one million, six hundred eighty-two thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 8.168292 × 107
Factors of 81682920
Divisors of 81682920
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 110 120 132 165 180 198 220 264 330 360 396 440 495 660 792 990 1320 1980 3960 20627 41254 61881 82508 103135 123762 165016 185643 206270 226897 247524 309405 371286 412540 453794 495048 618810 680691 742572 825080 907588 928215 1134485 1237620 1361382 1485144 1815176 1856430 2042073 2268970 2475240 2722764 3403455 3712860 4084146 4537940 5445528 6806910 7425720 8168292 9075880 10210365 13613820 16336584 20420730 27227640 40841460 81682920
- Sum of all divisors σ(n): 289617120
- Sum of proper divisors (its aliquot sum) s(n): 207934200
- 81682920 is an abundant number, because the sum of its proper divisors (207934200) is greater than itself. Its abundance is 126251280
Bases of 81682920
- Binary: 1001101111001100001111010002
- Hexadecimal: 0x4DE61E8
- Base-36: 1CMQY0
Squares and roots of 81682920
- 81682920 squared (816829202) is 6672099419726400
- 81682920 cubed (816829203) is 544996563133557953088000
-
The
square root of 81682920 is 9037.8603662593 -
The
cube root of 81682920 is 433.8874463023
Scales and comparisons
How big is 81682920?- 81,682,920 seconds is equal to 2 years, 31 weeks, 9 hours, 42 minutes.
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To count from 1 to 81,682,920 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 81682920 cubic inches would be around 36.2 feet tall.
Recreational maths with 81682920
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The information we have on file for 81682920 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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