81444272
81,444,272 is an even composite number composed of five prime numbers multiplied together.
81444272 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 81444272:
24 × 72 × 13 × 61 × 131
(2 × 2 × 2 × 2 × 7 × 7 × 13 × 61 × 131)See below for interesting mathematical facts about the number 81444272 from the Numbermatics database.
Names of 81444272
- Cardinal: 81444272 can be written as Eighty-one million, four hundred forty-four thousand, two hundred seventy-two.
Scientific notation
- Scientific notation: 8.1444272 × 107
Factors of 81444272
Divisors of 81444272
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 4 7 8 13 14 16 26 28 49 52 56 61 91 98 104 112 122 131 182 196 208 244 262 364 392 427 488 524 637 728 784 793 854 917 976 1048 1274 1456 1586 1703 1708 1834 2096 2548 2989 3172 3406 3416 3668 5096 5551 5978 6344 6419 6812 6832 7336 7991 10192 11102 11921 11956 12688 12838 13624 14672 15982 22204 23842 23912 25676 27248 31964 38857 44408 47684 47824 51352 55937 63928 77714 83447 88816 95368 102704 103883 111874 127856 155428 166894 190736 207766 223748 310856 333788 391559 415532 447496 621712 667576 727181 783118 831064 894992 1335152 1454362 1566236 1662128 2908724 3132472 5090267 5817448 6264944 10180534 11634896 20361068 40722136 81444272
- Sum of all divisors σ(n): 202455792
- Sum of proper divisors (its aliquot sum) s(n): 121011520
- 81444272 is an abundant number, because the sum of its proper divisors (121011520) is greater than itself. Its abundance is 39567248
Bases of 81444272
- Binary: 1001101101010111101101100002
- Hexadecimal: 0x4DABDB0
- Base-36: 1CHMSW
Squares and roots of 81444272
- 81444272 squared (814442722) is 6633169441609984
- 81444272 cubed (814442723) is 540233656224571654811648
-
The
square root of 81444272 is 9024.6480263775 -
The
cube root of 81444272 is 433.4644799631
Scales and comparisons
How big is 81444272?- 81,444,272 seconds is equal to 2 years, 30 weeks, 4 days, 15 hours, 24 minutes, 32 seconds.
-
To count from 1 to 81,444,272 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 81444272 cubic inches would be around 36.1 feet tall.
Recreational maths with 81444272
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The information we have on file for 81444272 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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