81049472
81,049,472 is an even composite number composed of four prime numbers multiplied together.
81049472 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81049472:
27 × 7 × 172 × 313
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 17 × 17 × 313)See below for interesting mathematical facts about the number 81049472 from the Numbermatics database.
Names of 81049472
- Cardinal: 81049472 can be written as Eighty-one million, forty-nine thousand, four hundred seventy-two.
Scientific notation
- Scientific notation: 8.1049472 × 107
Factors of 81049472
Divisors of 81049472
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 7 8 14 16 17 28 32 34 56 64 68 112 119 128 136 224 238 272 289 313 448 476 544 578 626 896 952 1088 1156 1252 1904 2023 2176 2191 2312 2504 3808 4046 4382 4624 5008 5321 7616 8092 8764 9248 10016 10642 15232 16184 17528 18496 20032 21284 32368 35056 36992 37247 40064 42568 64736 70112 74494 85136 90457 129472 140224 148988 170272 180914 258944 280448 297976 340544 361828 595952 633199 681088 723656 1191904 1266398 1447312 2383808 2532796 2894624 4767616 5065592 5789248 10131184 11578496 20262368 40524736 81049472
- Sum of all divisors σ(n): 196651920
- Sum of proper divisors (its aliquot sum) s(n): 115602448
- 81049472 is an abundant number, because the sum of its proper divisors (115602448) is greater than itself. Its abundance is 34552976
Bases of 81049472
- Binary: 1001101010010110111100000002
- Hexadecimal: 0x4D4B780
- Base-36: 1C9668
Squares and roots of 81049472
- 81049472 squared (810494722) is 6569016911478784
- 81049472 cubed (810494723) is 532415352234426182402048
-
The
square root of 81049472 is 9002.7480249089 -
The
cube root of 81049472 is 432.7629407829
Scales and comparisons
How big is 81049472?- 81,049,472 seconds is equal to 2 years, 30 weeks, 1 hour, 44 minutes, 32 seconds.
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To count from 1 to 81,049,472 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 81049472 cubic inches would be around 36.1 feet tall.
Recreational maths with 81049472
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The information we have on file for 81049472 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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