81067168
81,067,168 is an even composite number composed of five prime numbers multiplied together.
81067168 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 81067168:
25 × 72 × 13 × 41 × 97
(2 × 2 × 2 × 2 × 2 × 7 × 7 × 13 × 41 × 97)See below for interesting mathematical facts about the number 81067168 from the Numbermatics database.
Names of 81067168
- Cardinal: 81067168 can be written as Eighty-one million, sixty-seven thousand, one hundred sixty-eight.
Scientific notation
- Scientific notation: 8.1067168 × 107
Factors of 81067168
Divisors of 81067168
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 7 8 13 14 16 26 28 32 41 49 52 56 82 91 97 98 104 112 164 182 194 196 208 224 287 328 364 388 392 416 533 574 637 656 679 728 776 784 1066 1148 1261 1274 1312 1358 1456 1552 1568 2009 2132 2296 2522 2548 2716 2912 3104 3731 3977 4018 4264 4592 4753 5044 5096 5432 7462 7954 8036 8528 8827 9184 9506 10088 10192 10864 14924 15908 16072 17056 17654 19012 20176 20384 21728 26117 27839 29848 31816 32144 35308 38024 40352 51701 52234 55678 59696 61789 63632 64288 70616 76048 103402 104468 111356 119392 123578 127264 141232 152096 194873 206804 208936 222712 247156 282464 361907 389746 413608 417872 445424 494312 723814 779492 827216 835744 890848 988624 1447628 1558984 1654432 1977248 2533349 2895256 3117968 5066698 5790512 6235936 10133396 11581024 20266792 40533584 81067168
- Sum of all divisors σ(n): 206927784
- Sum of proper divisors (its aliquot sum) s(n): 125860616
- 81067168 is an abundant number, because the sum of its proper divisors (125860616) is greater than itself. Its abundance is 44793448
Bases of 81067168
- Binary: 1001101010011111100101000002
- Hexadecimal: 0x4D4FCA0
- Base-36: 1C9JTS
Squares and roots of 81067168
- 81067168 squared (810671682) is 6571885727540224
- 81067168 cubed (810671683) is 532764164351305565765632
-
The
square root of 81067168 is 9003.7307822925 -
The
cube root of 81067168 is 432.7944343695
Scales and comparisons
How big is 81067168?- 81,067,168 seconds is equal to 2 years, 30 weeks, 6 hours, 39 minutes, 28 seconds.
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To count from 1 to 81,067,168 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 81067168 cubic inches would be around 36.1 feet tall.
Recreational maths with 81067168
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