81814836990
81,814,836,990 is an even composite number composed of seven prime numbers multiplied together.
81814836990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81814836990:
2 × 3 × 5 × 17 × 31 × 67 × 77237
See below for interesting mathematical facts about the number 81814836990 from the Numbermatics database.
Names of 81814836990
- Cardinal: 81814836990 can be written as Eighty-one billion, eight hundred fourteen million, eight hundred thirty-six thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 8.181483699 × 1010
Factors of 81814836990
Divisors of 81814836990
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 10 15 17 30 31 34 51 62 67 85 93 102 134 155 170 186 201 255 310 335 402 465 510 527 670 930 1005 1054 1139 1581 2010 2077 2278 2635 3162 3417 4154 5270 5695 6231 6834 7905 10385 11390 12462 15810 17085 20770 31155 34170 35309 62310 70618 77237 105927 154474 176545 211854 231711 353090 386185 463422 529635 772370 1059270 1158555 1313029 2317110 2394347 2626058 3939087 4788694 5174879 6565145 7183041 7878174 10349758 11971735 13130290 14366082 15524637 19695435 23943470 25874395 31049274 35915205 39390870 40703899 51748790 71830410 77623185 81407798 87972943 122111697 155246370 160421249 175945886 203519495 244223394 263918829 320842498 407038990 439864715 481263747 527837658 610558485 802106245 879729430 962527494 1221116970 1319594145 1604212490 2406318735 2639188290 2727161233 4812637470 5454322466 8181483699 13635806165 16362967398 27271612330 40907418495 81814836990
- Sum of all divisors σ(n): 217818574848
- Sum of proper divisors (its aliquot sum) s(n): 136003737858
- 81814836990 is an abundant number, because the sum of its proper divisors (136003737858) is greater than itself. Its abundance is 54188900868
Bases of 81814836990
- Binary: 10011000011001000101101010110111111102
- Hexadecimal: 0x130C8B56FE
- Base-36: 11L2FW8U
Squares and roots of 81814836990
- 81814836990 squared (818148369902) is 6693667551700272260100
- 81814836990 cubed (818148369903) is 547641319607610172298700381099000
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The
square root of 81814836990 is 286032.9299049325 -
The
cube root of 81814836990 is 4341.2089511119
Scales and comparisons
How big is 81814836990?- 81,814,836,990 seconds is equal to 2,601 years, 23 weeks, 5 days, 23 hours, 36 minutes, 30 seconds.
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To count from 1 to 81,814,836,990 would take you about five thousand, two hundred two 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 81814836990 cubic inches would be around 361.8 feet tall.
Recreational maths with 81814836990
- 81814836990 backwards is 09963841818
- The number of decimal digits it has is: 11
- The sum of 81814836990's digits is 57
- More coming soon!
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The information we have on file for 81814836990 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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