81316040
81,316,040 is an even composite number composed of five prime numbers multiplied together.
81316040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81316040:
23 × 5 × 132 × 23 × 523
(2 × 2 × 2 × 5 × 13 × 13 × 23 × 523)See below for interesting mathematical facts about the number 81316040 from the Numbermatics database.
Names of 81316040
- Cardinal: 81316040 can be written as Eighty-one million, three hundred sixteen thousand and forty.
Scientific notation
- Scientific notation: 8.131604 × 107
Factors of 81316040
Divisors of 81316040
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 8 10 13 20 23 26 40 46 52 65 92 104 115 130 169 184 230 260 299 338 460 520 523 598 676 845 920 1046 1196 1352 1495 1690 2092 2392 2615 2990 3380 3887 4184 5230 5980 6760 6799 7774 10460 11960 12029 13598 15548 19435 20920 24058 27196 31096 33995 38870 48116 54392 60145 67990 77740 88387 96232 120290 135980 155480 156377 176774 240580 271960 312754 353548 441935 481160 625508 707096 781885 883870 1251016 1563770 1767740 2032901 3127540 3535480 4065802 6255080 8131604 10164505 16263208 20329010 40658020 81316040
- Sum of all divisors σ(n): 207126720
- Sum of proper divisors (its aliquot sum) s(n): 125810680
- 81316040 is an abundant number, because the sum of its proper divisors (125810680) is greater than itself. Its abundance is 44494640
Bases of 81316040
- Binary: 1001101100011001000110010002
- Hexadecimal: 0x4D8C8C8
- Base-36: 1CEVUW
Squares and roots of 81316040
- 81316040 squared (813160402) is 6612298361281600
- 81316040 cubed (813160403) is 537685918037909036864000
-
The
square root of 81316040 is 9017.5406846879 -
The
cube root of 81316040 is 433.2368674159
Scales and comparisons
How big is 81316040?- 81,316,040 seconds is equal to 2 years, 30 weeks, 3 days, 3 hours, 47 minutes, 20 seconds.
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To count from 1 to 81,316,040 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 81316040 cubic inches would be around 36.1 feet tall.
Recreational maths with 81316040
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The information we have on file for 81316040 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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