81380200
81,380,200 is an even composite number composed of five prime numbers multiplied together.
81380200 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81380200:
23 × 52 × 11 × 71 × 521
(2 × 2 × 2 × 5 × 5 × 11 × 71 × 521)See below for interesting mathematical facts about the number 81380200 from the Numbermatics database.
Names of 81380200
- Cardinal: 81380200 can be written as Eighty-one million, three hundred eighty thousand, two hundred.
Scientific notation
- Scientific notation: 8.13802 × 107
Factors of 81380200
Divisors of 81380200
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 8 10 11 20 22 25 40 44 50 55 71 88 100 110 142 200 220 275 284 355 440 521 550 568 710 781 1042 1100 1420 1562 1775 2084 2200 2605 2840 3124 3550 3905 4168 5210 5731 6248 7100 7810 10420 11462 13025 14200 15620 19525 20840 22924 26050 28655 31240 36991 39050 45848 52100 57310 73982 78100 104200 114620 143275 147964 156200 184955 229240 286550 295928 369910 406901 573100 739820 813802 924775 1146200 1479640 1627604 1849550 2034505 3255208 3699100 4069010 7398200 8138020 10172525 16276040 20345050 40690100 81380200
- Sum of all divisors σ(n): 209718720
- Sum of proper divisors (its aliquot sum) s(n): 128338520
- 81380200 is an abundant number, because the sum of its proper divisors (128338520) is greater than itself. Its abundance is 46958320
Bases of 81380200
- Binary: 1001101100111000011011010002
- Hexadecimal: 0x4D9C368
- Base-36: 1CG9D4
Squares and roots of 81380200
- 81380200 squared (813802002) is 6622736952040000
- 81380200 cubed (813802003) is 538959657704405608000000
-
The
square root of 81380200 is 9021.0974942077 -
The
cube root of 81380200 is 433.3507816775
Scales and comparisons
How big is 81380200?- 81,380,200 seconds is equal to 2 years, 30 weeks, 3 days, 21 hours, 36 minutes, 40 seconds.
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To count from 1 to 81,380,200 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 81380200 cubic inches would be around 36.1 feet tall.
Recreational maths with 81380200
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The information we have on file for 81380200 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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