81325980
81,325,980 is an even composite number composed of five prime numbers multiplied together.
81325980 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 81325980:
22 × 32 × 5 × 47 × 9613
(2 × 2 × 3 × 3 × 5 × 47 × 9613)See below for interesting mathematical facts about the number 81325980 from the Numbermatics database.
Names of 81325980
- Cardinal: 81325980 can be written as Eighty-one million, three hundred twenty-five thousand, nine hundred eighty.
Scientific notation
- Scientific notation: 8.132598 × 107
Factors of 81325980
Divisors of 81325980
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 47 60 90 94 141 180 188 235 282 423 470 564 705 846 940 1410 1692 2115 2820 4230 8460 9613 19226 28839 38452 48065 57678 86517 96130 115356 144195 173034 192260 288390 346068 432585 451811 576780 865170 903622 1355433 1730340 1807244 2259055 2710866 4066299 4518110 5421732 6777165 8132598 9036220 13554330 16265196 20331495 27108660 40662990 81325980
- Sum of all divisors σ(n): 251963712
- Sum of proper divisors (its aliquot sum) s(n): 170637732
- 81325980 is an abundant number, because the sum of its proper divisors (170637732) is greater than itself. Its abundance is 89311752
Bases of 81325980
- Binary: 1001101100011101111100111002
- Hexadecimal: 0x4D8EF9C
- Base-36: 1CF3J0
Squares and roots of 81325980
- 81325980 squared (813259802) is 6613915022960400
- 81325980 cubed (813259803) is 537883120878977031192000
-
The
square root of 81325980 is 9018.0918158999 -
The
cube root of 81325980 is 433.2545195257
Scales and comparisons
How big is 81325980?- 81,325,980 seconds is equal to 2 years, 30 weeks, 3 days, 6 hours, 33 minutes.
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To count from 1 to 81,325,980 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 81325980 cubic inches would be around 36.1 feet tall.
Recreational maths with 81325980
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The information we have on file for 81325980 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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