81333750
81,333,750 is an even composite number composed of five prime numbers multiplied together.
81333750 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 81333750:
2 × 3 × 54 × 232 × 41
(2 × 3 × 5 × 5 × 5 × 5 × 23 × 23 × 41)See below for interesting mathematical facts about the number 81333750 from the Numbermatics database.
Names of 81333750
- Cardinal: 81333750 can be written as Eighty-one million, three hundred thirty-three thousand, seven hundred fifty.
Scientific notation
- Scientific notation: 8.133375 × 107
Factors of 81333750
Divisors of 81333750
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 5 6 10 15 23 25 30 41 46 50 69 75 82 115 123 125 138 150 205 230 246 250 345 375 410 529 575 615 625 690 750 943 1025 1058 1150 1230 1250 1587 1725 1875 1886 2050 2645 2829 2875 3075 3174 3450 3750 4715 5125 5290 5658 5750 6150 7935 8625 9430 10250 13225 14145 14375 15375 15870 17250 21689 23575 25625 26450 28290 28750 30750 39675 43125 43378 47150 51250 65067 66125 70725 76875 79350 86250 108445 117875 130134 132250 141450 153750 198375 216890 235750 325335 330625 353625 396750 542225 589375 650670 661250 707250 991875 1084450 1178750 1626675 1768125 1983750 2711125 3253350 3536250 5422250 8133375 13555625 16266750 27111250 40666875 81333750
- Sum of all divisors σ(n): 217674072
- Sum of proper divisors (its aliquot sum) s(n): 136340322
- 81333750 is an abundant number, because the sum of its proper divisors (136340322) is greater than itself. Its abundance is 55006572
Bases of 81333750
- Binary: 1001101100100001101111101102
- Hexadecimal: 0x4D90DF6
- Base-36: 1CF9IU
Squares and roots of 81333750
- 81333750 squared (813337502) is 6615178889062500
- 81333750 cubed (813337503) is 538037305968287109375000
-
The
square root of 81333750 is 9018.5226062809 -
The
cube root of 81333750 is 433.2683170043
Scales and comparisons
How big is 81333750?- 81,333,750 seconds is equal to 2 years, 30 weeks, 3 days, 8 hours, 42 minutes, 30 seconds.
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To count from 1 to 81,333,750 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 81333750 cubic inches would be around 36.1 feet tall.
Recreational maths with 81333750
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The information we have on file for 81333750 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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