81491124
81,491,124 is an even composite number composed of five prime numbers multiplied together.
81491124 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 81491124:
22 × 3 × 11 × 133 × 281
(2 × 2 × 3 × 11 × 13 × 13 × 13 × 281)See below for interesting mathematical facts about the number 81491124 from the Numbermatics database.
Names of 81491124
- Cardinal: 81491124 can be written as Eighty-one million, four hundred ninety-one thousand, one hundred twenty-four.
Scientific notation
- Scientific notation: 8.1491124 × 107
Factors of 81491124
Divisors of 81491124
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 11 12 13 22 26 33 39 44 52 66 78 132 143 156 169 281 286 338 429 507 562 572 676 843 858 1014 1124 1686 1716 1859 2028 2197 3091 3372 3653 3718 4394 5577 6182 6591 7306 7436 8788 9273 10959 11154 12364 13182 14612 18546 21918 22308 24167 26364 37092 40183 43836 47489 48334 72501 80366 94978 96668 120549 142467 145002 160732 189956 241098 284934 290004 482196 522379 569868 617357 1044758 1234714 1567137 1852071 2089516 2469428 3134274 3704142 6268548 6790927 7408284 13581854 20372781 27163708 40745562 81491124
- Sum of all divisors σ(n): 225509760
- Sum of proper divisors (its aliquot sum) s(n): 144018636
- 81491124 is an abundant number, because the sum of its proper divisors (144018636) is greater than itself. Its abundance is 62527512
Bases of 81491124
- Binary: 1001101101101110100101101002
- Hexadecimal: 0x4DB74B4
- Base-36: 1CIMYC
Squares and roots of 81491124
- 81491124 squared (814911242) is 6640803290783376
- 81491124 cubed (814911243) is 541166524428836150754624
-
The
square root of 81491124 is 9027.2434330753 -
The
cube root of 81491124 is 433.5475829417
Scales and comparisons
How big is 81491124?- 81,491,124 seconds is equal to 2 years, 30 weeks, 5 days, 4 hours, 25 minutes, 24 seconds.
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To count from 1 to 81,491,124 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 81491124 cubic inches would be around 36.1 feet tall.
Recreational maths with 81491124
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