81072090
81,072,090 is an even composite number composed of five prime numbers multiplied together.
81072090 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81072090:
2 × 37 × 5 × 11 × 337
(2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 11 × 337)See below for interesting mathematical facts about the number 81072090 from the Numbermatics database.
Names of 81072090
- Cardinal: 81072090 can be written as Eighty-one million, seventy-two thousand and ninety.
Scientific notation
- Scientific notation: 8.107209 × 107
Factors of 81072090
Divisors of 81072090
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 81 90 99 110 135 162 165 198 243 270 297 330 337 405 486 495 594 674 729 810 891 990 1011 1215 1458 1485 1685 1782 2022 2187 2430 2673 2970 3033 3370 3645 3707 4374 4455 5055 5346 6066 7290 7414 8019 8910 9099 10110 10935 11121 13365 15165 16038 18198 18535 21870 22242 24057 26730 27297 30330 33363 37070 40095 45495 48114 54594 55605 66726 80190 81891 90990 100089 111210 120285 136485 163782 166815 200178 240570 245673 272970 300267 333630 409455 491346 500445 600534 737019 818910 900801 1000890 1228365 1474038 1501335 1801602 2456730 2702403 3002670 3685095 4504005 5404806 7370190 8107209 9008010 13512015 16214418 27024030 40536045 81072090
- Sum of all divisors σ(n): 239466240
- Sum of proper divisors (its aliquot sum) s(n): 158394150
- 81072090 is an abundant number, because the sum of its proper divisors (158394150) is greater than itself. Its abundance is 77322060
Bases of 81072090
- Binary: 1001101010100001111110110102
- Hexadecimal: 0x4D50FDA
- Base-36: 1C9NMI
Squares and roots of 81072090
- 81072090 squared (810720902) is 6572683776968100
- 81072090 cubed (810720903) is 532861210707897730329000
-
The
square root of 81072090 is 9004.0041092837 -
The
cube root of 81072090 is 432.8031932427
Scales and comparisons
How big is 81072090?- 81,072,090 seconds is equal to 2 years, 30 weeks, 8 hours, 1 minute, 30 seconds.
-
To count from 1 to 81,072,090 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 81072090 cubic inches would be around 36.1 feet tall.
Recreational maths with 81072090
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The information we have on file for 81072090 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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