81497988
81,497,988 is an even composite number composed of five prime numbers multiplied together.
81497988 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 81497988:
22 × 34 × 11 × 13 × 1759
(2 × 2 × 3 × 3 × 3 × 3 × 11 × 13 × 1759)See below for interesting mathematical facts about the number 81497988 from the Numbermatics database.
Names of 81497988
- Cardinal: 81497988 can be written as Eighty-one million, four hundred ninety-seven thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 8.1497988 × 107
Factors of 81497988
Divisors of 81497988
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 3 4 6 9 11 12 13 18 22 26 27 33 36 39 44 52 54 66 78 81 99 108 117 132 143 156 162 198 234 286 297 324 351 396 429 468 572 594 702 858 891 1053 1188 1287 1404 1716 1759 1782 2106 2574 3518 3564 3861 4212 5148 5277 7036 7722 10554 11583 15444 15831 19349 21108 22867 23166 31662 38698 45734 46332 47493 58047 63324 68601 77396 91468 94986 116094 137202 142479 174141 189972 205803 232188 251537 274404 284958 348282 411606 503074 522423 569916 617409 696564 754611 823212 1006148 1044846 1234818 1509222 1567269 1852227 2089692 2263833 2469636 3018444 3134538 3704454 4527666 6269076 6791499 7408908 9055332 13582998 20374497 27165996 40748994 81497988
- Sum of all divisors σ(n): 250440960
- Sum of proper divisors (its aliquot sum) s(n): 168942972
- 81497988 is an abundant number, because the sum of its proper divisors (168942972) is greater than itself. Its abundance is 87444984
Bases of 81497988
- Binary: 1001101101110001111100001002
- Hexadecimal: 0x4DB8F84
- Base-36: 1CIS90
Squares and roots of 81497988
- 81497988 squared (814979882) is 6641922048048144
- 81497988 cubed (814979883) is 541303283368763063134272
-
The
square root of 81497988 is 9027.6236075725 -
The
cube root of 81497988 is 433.5597551755
Scales and comparisons
How big is 81497988?- 81,497,988 seconds is equal to 2 years, 30 weeks, 5 days, 6 hours, 19 minutes, 48 seconds.
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To count from 1 to 81,497,988 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 81497988 cubic inches would be around 36.1 feet tall.
Recreational maths with 81497988
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The information we have on file for 81497988 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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