81198120
81,198,120 is an even composite number composed of six prime numbers multiplied together.
81198120 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81198120:
23 × 3 × 5 × 17 × 53 × 751
(2 × 2 × 2 × 3 × 5 × 17 × 53 × 751)See below for interesting mathematical facts about the number 81198120 from the Numbermatics database.
Names of 81198120
- Cardinal: 81198120 can be written as Eighty-one million, one hundred ninety-eight thousand, one hundred twenty.
Scientific notation
- Scientific notation: 8.119812 × 107
Factors of 81198120
Divisors of 81198120
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 17 20 24 30 34 40 51 53 60 68 85 102 106 120 136 159 170 204 212 255 265 318 340 408 424 510 530 636 680 751 795 901 1020 1060 1272 1502 1590 1802 2040 2120 2253 2703 3004 3180 3604 3755 4505 4506 5406 6008 6360 7208 7510 9010 9012 10812 11265 12767 13515 15020 18020 18024 21624 22530 25534 27030 30040 36040 38301 39803 45060 51068 54060 63835 76602 79606 90120 102136 108120 119409 127670 153204 159212 191505 199015 238818 255340 306408 318424 383010 398030 477636 510680 597045 676651 766020 796060 955272 1194090 1353302 1532040 1592120 2029953 2388180 2706604 3383255 4059906 4776360 5413208 6766510 8119812 10149765 13533020 16239624 20299530 27066040 40599060 81198120
- Sum of all divisors σ(n): 263139840
- Sum of proper divisors (its aliquot sum) s(n): 181941720
- 81198120 is an abundant number, because the sum of its proper divisors (181941720) is greater than itself. Its abundance is 100743600
Bases of 81198120
- Binary: 1001101011011111100001010002
- Hexadecimal: 0x4D6FC28
- Base-36: 1CCCVC
Squares and roots of 81198120
- 81198120 squared (811981202) is 6593134691534400
- 81198120 cubed (811981203) is 535350141859373195328000
-
The
square root of 81198120 is 9010.9999445123 -
The
cube root of 81198120 is 433.0273474327
Scales and comparisons
How big is 81198120?- 81,198,120 seconds is equal to 2 years, 30 weeks, 1 day, 19 hours, 2 minutes.
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To count from 1 to 81,198,120 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 81198120 cubic inches would be around 36.1 feet tall.
Recreational maths with 81198120
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