81378120
81,378,120 is an even composite number composed of five prime numbers multiplied together.
81378120 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 81378120:
23 × 3 × 5 × 359 × 1889
(2 × 2 × 2 × 3 × 5 × 359 × 1889)See below for interesting mathematical facts about the number 81378120 from the Numbermatics database.
Names of 81378120
- Cardinal: 81378120 can be written as Eighty-one million, three hundred seventy-eight thousand, one hundred twenty.
Scientific notation
- Scientific notation: 8.137812 × 107
Factors of 81378120
Divisors of 81378120
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 359 718 1077 1436 1795 1889 2154 2872 3590 3778 4308 5385 5667 7180 7556 8616 9445 10770 11334 14360 15112 18890 21540 22668 28335 37780 43080 45336 56670 75560 113340 226680 678151 1356302 2034453 2712604 3390755 4068906 5425208 6781510 8137812 10172265 13563020 16275624 20344530 27126040 40689060 81378120
- Sum of all divisors σ(n): 244944000
- Sum of proper divisors (its aliquot sum) s(n): 163565880
- 81378120 is an abundant number, because the sum of its proper divisors (163565880) is greater than itself. Its abundance is 82187760
Bases of 81378120
- Binary: 1001101100110111011010010002
- Hexadecimal: 0x4D9BB48
- Base-36: 1CG7RC
Squares and roots of 81378120
- 81378120 squared (813781202) is 6622398414734400
- 81378120 cubed (813781203) is 538918332882065771328000
-
The
square root of 81378120 is 9020.9822081633 -
The
cube root of 81378120 is 433.3470896357
Scales and comparisons
How big is 81378120?- 81,378,120 seconds is equal to 2 years, 30 weeks, 3 days, 21 hours, 2 minutes.
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To count from 1 to 81,378,120 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 81378120 cubic inches would be around 36.1 feet tall.
Recreational maths with 81378120
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The information we have on file for 81378120 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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