81302490
81,302,490 is an even composite number composed of six prime numbers multiplied together.
81302490 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81302490:
2 × 32 × 5 × 67 × 97 × 139
(2 × 3 × 3 × 5 × 67 × 97 × 139)See below for interesting mathematical facts about the number 81302490 from the Numbermatics database.
Names of 81302490
- Cardinal: 81302490 can be written as Eighty-one million, three hundred two thousand, four hundred ninety.
Scientific notation
- Scientific notation: 8.130249 × 107
Factors of 81302490
Divisors of 81302490
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 5 6 9 10 15 18 30 45 67 90 97 134 139 194 201 278 291 335 402 417 485 582 603 670 695 834 873 970 1005 1206 1251 1390 1455 1746 2010 2085 2502 2910 3015 4170 4365 6030 6255 6499 8730 9313 12510 12998 13483 18626 19497 26966 27939 32495 38994 40449 46565 55878 58491 64990 67415 80898 83817 93130 97485 116982 121347 134830 139695 167634 194970 202245 242694 279390 292455 404490 419085 584910 606735 838170 903361 1213470 1806722 2710083 4516805 5420166 8130249 9033610 13550415 16260498 27100830 40651245 81302490
- Sum of all divisors σ(n): 218312640
- Sum of proper divisors (its aliquot sum) s(n): 137010150
- 81302490 is an abundant number, because the sum of its proper divisors (137010150) is greater than itself. Its abundance is 55707660
Bases of 81302490
- Binary: 1001101100010010011110110102
- Hexadecimal: 0x4D893DA
- Base-36: 1CELEI
Squares and roots of 81302490
- 81302490 squared (813024902) is 6610094880200100
- 81302490 cubed (813024903) is 537417172896519828249000
-
The
square root of 81302490 is 9016.7893398925 -
The
cube root of 81302490 is 433.2128021117
Scales and comparisons
How big is 81302490?- 81,302,490 seconds is equal to 2 years, 30 weeks, 3 days, 1 minute, 30 seconds.
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To count from 1 to 81,302,490 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 81302490 cubic inches would be around 36.1 feet tall.
Recreational maths with 81302490
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The information we have on file for 81302490 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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