81422437824
81,422,437,824 is an even composite number composed of five prime numbers multiplied together.
81422437824 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 81422437824:
26 × 32 × 7 × 13 × 1553389
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7 × 13 × 1553389)See below for interesting mathematical facts about the number 81422437824 from the Numbermatics database.
Names of 81422437824
- Cardinal: 81422437824 can be written as Eighty-one billion, four hundred twenty-two million, four hundred thirty-seven thousand, eight hundred twenty-four.
Scientific notation
- Scientific notation: 8.1422437824 × 1010
Factors of 81422437824
Divisors of 81422437824
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 32 36 39 42 48 52 56 63 64 72 78 84 91 96 104 112 117 126 144 156 168 182 192 208 224 234 252 273 288 312 336 364 416 448 468 504 546 576 624 672 728 819 832 936 1008 1092 1248 1344 1456 1638 1872 2016 2184 2496 2912 3276 3744 4032 4368 5824 6552 7488 8736 13104 17472 26208 52416 1553389 3106778 4660167 6213556 9320334 10873723 12427112 13980501 18640668 20194057 21747446 24854224 27961002 32621169 37281336 40388114 43494892 49708448 55922004 60582171 65242338 74562672 80776228 86989784 97863507 99416896 111844008 121164342 130484676 141358399 149125344 161552456 173979568 181746513 195727014 223688016 242328684 260969352 282716798 298250688 323104912 347959136 363493026 391454028 424075197 447376032 484657368 521938704 565433596 646209824 695918272 726986052 782908056 848150394 894752064 969314736 1043877408 1130867192 1272225591 1292419648 1453972104 1565816112 1696300788 1938629472 2087754816 2261734384 2544451182 2907944208 3131632224 3392601576 3877258944 4523468768 5088902364 5815888416 6263264448 6785203152 9046937536 10177804728 11631776832 13570406304 20355609456 27140812608 40711218912 81422437824
- Sum of all divisors σ(n): 287240451680
- Sum of proper divisors (its aliquot sum) s(n): 205818013856
- 81422437824 is an abundant number, because the sum of its proper divisors (205818013856) is greater than itself. Its abundance is 124395576032
Bases of 81422437824
- Binary: 10010111101010010011111001101110000002
- Hexadecimal: 0x12F527CDC0
- Base-36: 11EKTF40
Squares and roots of 81422437824
- 81422437824 squared (814224378242) is 6629613381203145854976
- 81422437824 cubed (814224378243) is 539799283328171553689986681012224
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The
square root of 81422437824 is 285346.1719105409 -
The
cube root of 81422437824 is 4334.2574105861
Scales and comparisons
How big is 81422437824?- 81,422,437,824 seconds is equal to 2,588 years, 51 weeks, 7 hours, 50 minutes, 24 seconds.
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To count from 1 to 81,422,437,824 would take you about five thousand, one hundred seventy-seven 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 81422437824 cubic inches would be around 361.2 feet tall.
Recreational maths with 81422437824
- 81422437824 backwards is 42873422418
- The number of decimal digits it has is: 11
- The sum of 81422437824's digits is 45
- More coming soon!
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