81742320
81,742,320 is an even composite number composed of five prime numbers multiplied together.
81742320 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 81742320:
24 × 32 × 5 × 11 × 10321
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 11 × 10321)See below for interesting mathematical facts about the number 81742320 from the Numbermatics database.
Names of 81742320
- Cardinal: 81742320 can be written as Eighty-one million, seven hundred forty-two thousand, three hundred twenty.
Scientific notation
- Scientific notation: 8.174232 × 107
Factors of 81742320
Divisors of 81742320
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 33 36 40 44 45 48 55 60 66 72 80 88 90 99 110 120 132 144 165 176 180 198 220 240 264 330 360 396 440 495 528 660 720 792 880 990 1320 1584 1980 2640 3960 7920 10321 20642 30963 41284 51605 61926 82568 92889 103210 113531 123852 154815 165136 185778 206420 227062 247704 309630 340593 371556 412840 454124 464445 495408 567655 619260 681186 743112 825680 908248 928890 1021779 1135310 1238520 1362372 1486224 1702965 1816496 1857780 2043558 2270620 2477040 2724744 3405930 3715560 4087116 4541240 5108895 5449488 6811860 7431120 8174232 9082480 10217790 13623720 16348464 20435580 27247440 40871160 81742320
- Sum of all divisors σ(n): 299503152
- Sum of proper divisors (its aliquot sum) s(n): 217760832
- 81742320 is an abundant number, because the sum of its proper divisors (217760832) is greater than itself. Its abundance is 136018512
Bases of 81742320
- Binary: 1001101111101001001111100002
- Hexadecimal: 0x4DF49F0
- Base-36: 1CO0S0
Squares and roots of 81742320
- 81742320 squared (817423202) is 6681806878982400
- 81742320 cubed (817423203) is 546186396079980615168000
-
The
square root of 81742320 is 9041.1459450669 -
The
cube root of 81742320 is 433.9925954551
Scales and comparisons
How big is 81742320?- 81,742,320 seconds is equal to 2 years, 31 weeks, 1 day, 2 hours, 12 minutes.
-
To count from 1 to 81,742,320 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 81742320 cubic inches would be around 36.2 feet tall.
Recreational maths with 81742320
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The information we have on file for 81742320 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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