81242320
81,242,320 is an even composite number composed of six prime numbers multiplied together.
81242320 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 81242320:
24 × 5 × 17 × 31 × 41 × 47
(2 × 2 × 2 × 2 × 5 × 17 × 31 × 41 × 47)See below for interesting mathematical facts about the number 81242320 from the Numbermatics database.
Names of 81242320
- Cardinal: 81242320 can be written as Eighty-one million, two hundred forty-two thousand, three hundred twenty.
Scientific notation
- Scientific notation: 8.124232 × 107
Factors of 81242320
Divisors of 81242320
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 5 8 10 16 17 20 31 34 40 41 47 62 68 80 82 85 94 124 136 155 164 170 188 205 235 248 272 310 328 340 376 410 470 496 527 620 656 680 697 752 799 820 940 1054 1240 1271 1360 1394 1457 1598 1640 1880 1927 2108 2480 2542 2635 2788 2914 3196 3280 3485 3760 3854 3995 4216 5084 5270 5576 5828 6355 6392 6970 7285 7708 7990 8432 9635 10168 10540 11152 11656 12710 12784 13940 14570 15416 15980 19270 20336 21080 21607 23312 24769 25420 27880 29140 30832 31960 32759 38540 42160 43214 49538 50840 55760 58280 59737 63920 65518 77080 86428 99076 101680 108035 116560 119474 123845 131036 154160 163795 172856 198152 216070 238948 247690 262072 298685 327590 345712 396304 432140 477896 495380 524144 597370 655180 864280 955792 990760 1015529 1194740 1310360 1728560 1981520 2031058 2389480 2620720 4062116 4778960 5077645 8124232 10155290 16248464 20310580 40621160 81242320
- Sum of all divisors σ(n): 215986176
- Sum of proper divisors (its aliquot sum) s(n): 134743856
- 81242320 is an abundant number, because the sum of its proper divisors (134743856) is greater than itself. Its abundance is 53501536
Bases of 81242320
- Binary: 1001101011110101000110100002
- Hexadecimal: 0x4D7A8D0
- Base-36: 1CDAZ4
Squares and roots of 81242320
- 81242320 squared (812423202) is 6600314558982400
- 81242320 cubed (812423203) is 536224867501507015168000
-
The
square root of 81242320 is 9013.4521688419 -
The
cube root of 81242320 is 433.1059056429
Scales and comparisons
How big is 81242320?- 81,242,320 seconds is equal to 2 years, 30 weeks, 2 days, 7 hours, 18 minutes, 40 seconds.
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To count from 1 to 81,242,320 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 81242320 cubic inches would be around 36.1 feet tall.
Recreational maths with 81242320
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The information we have on file for 81242320 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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