81529664
81,529,664 is an even composite number composed of four prime numbers multiplied together.
81529664 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-six divisors.
Prime factorization of 81529664:
26 × 23 × 97 × 571
(2 × 2 × 2 × 2 × 2 × 2 × 23 × 97 × 571)See below for interesting mathematical facts about the number 81529664 from the Numbermatics database.
Names of 81529664
- Cardinal: 81529664 can be written as Eighty-one million, five hundred twenty-nine thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 8.1529664 × 107
Factors of 81529664
Divisors of 81529664
- Number of divisors d(n): 56
-
Complete list of divisors:
1 2 4 8 16 23 32 46 64 92 97 184 194 368 388 571 736 776 1142 1472 1552 2231 2284 3104 4462 4568 6208 8924 9136 13133 17848 18272 26266 35696 36544 52532 55387 71392 105064 110774 142784 210128 221548 420256 443096 840512 886192 1273901 1772384 2547802 3544768 5095604 10191208 20382416 40764832 81529664
- Sum of all divisors σ(n): 170858688
- Sum of proper divisors (its aliquot sum) s(n): 89329024
- 81529664 is an abundant number, because the sum of its proper divisors (89329024) is greater than itself. Its abundance is 7799360
Bases of 81529664
- Binary: 1001101110000001011010000002
- Hexadecimal: 0x4DC0B40
- Base-36: 1CJGOW
Squares and roots of 81529664
- 81529664 squared (815296642) is 6647086111952896
- 81529664 cubed (815296643) is 541934697286585994706944
-
The
square root of 81529664 is 9029.3778301721 -
The
cube root of 81529664 is 433.6159187701
Scales and comparisons
How big is 81529664?- 81,529,664 seconds is equal to 2 years, 30 weeks, 5 days, 15 hours, 7 minutes, 44 seconds.
-
To count from 1 to 81,529,664 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 81529664 cubic inches would be around 36.1 feet tall.
Recreational maths with 81529664
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The information we have on file for 81529664 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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