81442270
81,442,270 is an even composite number composed of six prime numbers multiplied together.
81442270 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 81442270:
2 × 5 × 7 × 13 × 31 × 2887
See below for interesting mathematical facts about the number 81442270 from the Numbermatics database.
Names of 81442270
- Cardinal: 81442270 can be written as Eighty-one million, four hundred forty-two thousand, two hundred seventy.
Scientific notation
- Scientific notation: 8.144227 × 107
Factors of 81442270
Divisors of 81442270
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 5 7 10 13 14 26 31 35 62 65 70 91 130 155 182 217 310 403 434 455 806 910 1085 2015 2170 2821 2887 4030 5642 5774 14105 14435 20209 28210 28870 37531 40418 75062 89497 101045 178994 187655 202090 262717 375310 447485 525434 626479 894970 1163461 1252958 1313585 2326922 2627170 3132395 5817305 6264790 8144227 11634610 16288454 40721135 81442270
- Sum of all divisors σ(n): 186310656
- Sum of proper divisors (its aliquot sum) s(n): 104868386
- 81442270 is an abundant number, because the sum of its proper divisors (104868386) is greater than itself. Its abundance is 23426116
Bases of 81442270
- Binary: 1001101101010110101110111102
- Hexadecimal: 0x4DAB5DE
- Base-36: 1CHL9A
Squares and roots of 81442270
- 81442270 squared (814422702) is 6632843342752900
- 81442270 cubed (814422703) is 540193818388184225083000
-
The
square root of 81442270 is 9024.5371072427 -
The
cube root of 81442270 is 433.4609282379
Scales and comparisons
How big is 81442270?- 81,442,270 seconds is equal to 2 years, 30 weeks, 4 days, 14 hours, 51 minutes, 10 seconds.
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To count from 1 to 81,442,270 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 81442270 cubic inches would be around 36.1 feet tall.
Recreational maths with 81442270
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The information we have on file for 81442270 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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