81042432
81,042,432 is an even composite number composed of five prime numbers multiplied together.
81042432 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred seventy-six divisors.
Prime factorization of 81042432:
210 × 3 × 23 × 31 × 37
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 23 × 31 × 37)See below for interesting mathematical facts about the number 81042432 from the Numbermatics database.
Names of 81042432
- Cardinal: 81042432 can be written as Eighty-one million, forty-two thousand, four hundred thirty-two.
Scientific notation
- Scientific notation: 8.1042432 × 107
Factors of 81042432
Divisors of 81042432
- Number of divisors d(n): 176
-
Complete list of divisors:
1 2 3 4 6 8 12 16 23 24 31 32 37 46 48 62 64 69 74 92 93 96 111 124 128 138 148 184 186 192 222 248 256 276 296 368 372 384 444 496 512 552 592 713 736 744 768 851 888 992 1024 1104 1147 1184 1426 1472 1488 1536 1702 1776 1984 2139 2208 2294 2368 2553 2852 2944 2976 3072 3404 3441 3552 3968 4278 4416 4588 4736 5106 5704 5888 5952 6808 6882 7104 7936 8556 8832 9176 9472 10212 11408 11776 11904 13616 13764 14208 15872 17112 17664 18352 18944 20424 22816 23552 23808 26381 27232 27528 28416 31744 34224 35328 36704 37888 40848 45632 47616 52762 54464 55056 56832 68448 70656 73408 79143 81696 91264 95232 105524 108928 110112 113664 136896 146816 158286 163392 182528 211048 217856 220224 273792 293632 316572 326784 365056 422096 435712 440448 547584 587264 633144 653568 730112 844192 871424 880896 1095168 1174528 1266288 1307136 1688384 1761792 2190336 2532576 2614272 3376768 3523584 5065152 6753536 10130304 13507072 20260608 27014144 40521216 81042432
- Sum of all divisors σ(n): 238958592
- Sum of proper divisors (its aliquot sum) s(n): 157916160
- 81042432 is an abundant number, because the sum of its proper divisors (157916160) is greater than itself. Its abundance is 76873728
Bases of 81042432
- Binary: 1001101010010011100000000002
- Hexadecimal: 0x4D49C00
- Base-36: 1C90QO
Squares and roots of 81042432
- 81042432 squared (810424322) is 6567875784474624
- 81042432 cubed (810424323) is 532276626647731371245568
-
The
square root of 81042432 is 9002.3570246909 -
The
cube root of 81042432 is 432.7504104141
Scales and comparisons
How big is 81042432?- 81,042,432 seconds is equal to 2 years, 29 weeks, 6 days, 23 hours, 47 minutes, 12 seconds.
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To count from 1 to 81,042,432 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 81042432 cubic inches would be around 36.1 feet tall.
Recreational maths with 81042432
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