81420752
81,420,752 is an even composite number composed of five prime numbers multiplied together.
81420752 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 81420752:
24 × 72 × 17 × 41 × 149
(2 × 2 × 2 × 2 × 7 × 7 × 17 × 41 × 149)See below for interesting mathematical facts about the number 81420752 from the Numbermatics database.
Names of 81420752
- Cardinal: 81420752 can be written as Eighty-one million, four hundred twenty thousand, seven hundred fifty-two.
Scientific notation
- Scientific notation: 8.1420752 × 107
Factors of 81420752
Divisors of 81420752
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 4 7 8 14 16 17 28 34 41 49 56 68 82 98 112 119 136 149 164 196 238 272 287 298 328 392 476 574 596 656 697 784 833 952 1043 1148 1192 1394 1666 1904 2009 2086 2296 2384 2533 2788 3332 4018 4172 4592 4879 5066 5576 6109 6664 7301 8036 8344 9758 10132 11152 12218 13328 14602 16072 16688 17731 19516 20264 24436 29204 32144 34153 35462 39032 40528 42763 48872 58408 68306 70924 78064 85526 97744 103853 116816 124117 136612 141848 171052 207706 248234 273224 283696 299341 342104 415412 496468 546448 598682 684208 726971 830824 992936 1197364 1453942 1661648 1985872 2394728 2907884 4789456 5088797 5815768 10177594 11631536 20355188 40710376 81420752
- Sum of all divisors σ(n): 200377800
- Sum of proper divisors (its aliquot sum) s(n): 118957048
- 81420752 is an abundant number, because the sum of its proper divisors (118957048) is greater than itself. Its abundance is 37536296
Bases of 81420752
- Binary: 1001101101001100001110100002
- Hexadecimal: 0x4DA61D0
- Base-36: 1CH4NK
Squares and roots of 81420752
- 81420752 squared (814207522) is 6629338856245504
- 81420752 cubed (814207523) is 539765754938328832299008
-
The
square root of 81420752 is 9023.3448343727 -
The
cube root of 81420752 is 433.4227497269
Scales and comparisons
How big is 81420752?- 81,420,752 seconds is equal to 2 years, 30 weeks, 4 days, 8 hours, 52 minutes, 32 seconds.
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To count from 1 to 81,420,752 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 81420752 cubic inches would be around 36.1 feet tall.
Recreational maths with 81420752
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The information we have on file for 81420752 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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