81331830
81,331,830 is an even composite number composed of five prime numbers multiplied together.
81331830 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 81331830:
2 × 33 × 5 × 227 × 1327
(2 × 3 × 3 × 3 × 5 × 227 × 1327)See below for interesting mathematical facts about the number 81331830 from the Numbermatics database.
Names of 81331830
- Cardinal: 81331830 can be written as Eighty-one million, three hundred thirty-one thousand, eight hundred thirty.
Scientific notation
- Scientific notation: 8.133183 × 107
Factors of 81331830
Divisors of 81331830
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 227 270 454 681 1135 1327 1362 2043 2270 2654 3405 3981 4086 6129 6635 6810 7962 10215 11943 12258 13270 19905 20430 23886 30645 35829 39810 59715 61290 71658 119430 179145 301229 358290 602458 903687 1506145 1807374 2711061 3012290 4518435 5422122 8133183 9036870 13555305 16266366 27110610 40665915 81331830
- Sum of all divisors σ(n): 218004480
- Sum of proper divisors (its aliquot sum) s(n): 136672650
- 81331830 is an abundant number, because the sum of its proper divisors (136672650) is greater than itself. Its abundance is 55340820
Bases of 81331830
- Binary: 1001101100100000110011101102
- Hexadecimal: 0x4D90676
- Base-36: 1CF81I
Squares and roots of 81331830
- 81331830 squared (813318302) is 6614866571148900
- 81331830 cubed (813318303) is 537999203437365239487000
-
The
square root of 81331830 is 9018.4161580623 -
The
cube root of 81331830 is 433.2649076705
Scales and comparisons
How big is 81331830?- 81,331,830 seconds is equal to 2 years, 30 weeks, 3 days, 8 hours, 10 minutes, 30 seconds.
-
To count from 1 to 81,331,830 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 81331830 cubic inches would be around 36.1 feet tall.
Recreational maths with 81331830
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The information we have on file for 81331830 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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