81325400
81,325,400 is an even composite number composed of five prime numbers multiplied together.
81325400 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 81325400:
23 × 52 × 13 × 31 × 1009
(2 × 2 × 2 × 5 × 5 × 13 × 31 × 1009)See below for interesting mathematical facts about the number 81325400 from the Numbermatics database.
Names of 81325400
- Cardinal: 81325400 can be written as Eighty-one million, three hundred twenty-five thousand, four hundred.
Scientific notation
- Scientific notation: 8.13254 × 107
Factors of 81325400
Divisors of 81325400
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 8 10 13 20 25 26 31 40 50 52 62 65 100 104 124 130 155 200 248 260 310 325 403 520 620 650 775 806 1009 1240 1300 1550 1612 2015 2018 2600 3100 3224 4030 4036 5045 6200 8060 8072 10075 10090 13117 16120 20150 20180 25225 26234 31279 40300 40360 50450 52468 62558 65585 80600 100900 104936 125116 131170 156395 201800 250232 262340 312790 327925 406627 524680 625580 655850 781975 813254 1251160 1311700 1563950 1626508 2033135 2623400 3127900 3253016 4066270 6255800 8132540 10165675 16265080 20331350 40662700 81325400
- Sum of all divisors σ(n): 210403200
- Sum of proper divisors (its aliquot sum) s(n): 129077800
- 81325400 is an abundant number, because the sum of its proper divisors (129077800) is greater than itself. Its abundance is 47752400
Bases of 81325400
- Binary: 1001101100011101101010110002
- Hexadecimal: 0x4D8ED58
- Base-36: 1CF32W
Squares and roots of 81325400
- 81325400 squared (813254002) is 6613820685160000
- 81325400 cubed (813254003) is 537871612748911064000000
-
The
square root of 81325400 is 9018.0596582635 -
The
cube root of 81325400 is 433.2534895629
Scales and comparisons
How big is 81325400?- 81,325,400 seconds is equal to 2 years, 30 weeks, 3 days, 6 hours, 23 minutes, 20 seconds.
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To count from 1 to 81,325,400 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 81325400 cubic inches would be around 36.1 feet tall.
Recreational maths with 81325400
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The information we have on file for 81325400 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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