81012420
81,012,420 is an even composite number composed of five prime numbers multiplied together.
81012420 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 81012420:
22 × 33 × 5 × 71 × 2113
(2 × 2 × 3 × 3 × 3 × 5 × 71 × 2113)See below for interesting mathematical facts about the number 81012420 from the Numbermatics database.
Names of 81012420
- Cardinal: 81012420 can be written as Eighty-one million, twelve thousand, four hundred twenty.
Scientific notation
- Scientific notation: 8.101242 × 107
Factors of 81012420
Divisors of 81012420
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 71 90 108 135 142 180 213 270 284 355 426 540 639 710 852 1065 1278 1420 1917 2113 2130 2556 3195 3834 4226 4260 6339 6390 7668 8452 9585 10565 12678 12780 19017 19170 21130 25356 31695 38034 38340 42260 57051 63390 76068 95085 114102 126780 150023 190170 228204 285255 300046 380340 450069 570510 600092 750115 900138 1141020 1350207 1500230 1800276 2250345 2700414 3000460 4050621 4500690 5400828 6751035 8101242 9001380 13502070 16202484 20253105 27004140 40506210 81012420
- Sum of all divisors σ(n): 255709440
- Sum of proper divisors (its aliquot sum) s(n): 174697020
- 81012420 is an abundant number, because the sum of its proper divisors (174697020) is greater than itself. Its abundance is 93684600
Bases of 81012420
- Binary: 1001101010000100110110001002
- Hexadecimal: 0x4D426C4
- Base-36: 1C8DL0
Squares and roots of 81012420
- 81012420 squared (810124202) is 6563012194256400
- 81012420 cubed (810124203) is 531685500346221064488000
-
The
square root of 81012420 is 9000.6899735519 -
The
cube root of 81012420 is 432.6969844555
Scales and comparisons
How big is 81012420?- 81,012,420 seconds is equal to 2 years, 29 weeks, 6 days, 15 hours, 27 minutes.
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To count from 1 to 81,012,420 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 81012420 cubic inches would be around 36.1 feet tall.
Recreational maths with 81012420
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The information we have on file for 81012420 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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