20813240
20,813,240 is an even composite number composed of five prime numbers multiplied together.
20813240 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20813240:
23 × 5 × 73 × 37 × 41
(2 × 2 × 2 × 5 × 7 × 7 × 7 × 37 × 41)See below for interesting mathematical facts about the number 20813240 from the Numbermatics database.
Names of 20813240
- Cardinal: 20813240 can be written as Twenty million, eight hundred thirteen thousand, two hundred forty.
Scientific notation
- Scientific notation: 2.081324 × 107
Factors of 20813240
Divisors of 20813240
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 5 7 8 10 14 20 28 35 37 40 41 49 56 70 74 82 98 140 148 164 185 196 205 245 259 280 287 296 328 343 370 392 410 490 518 574 686 740 820 980 1036 1148 1295 1372 1435 1480 1517 1640 1715 1813 1960 2009 2072 2296 2590 2744 2870 3034 3430 3626 4018 5180 5740 6068 6860 7252 7585 8036 9065 10045 10360 10619 11480 12136 12691 13720 14063 14504 15170 16072 18130 20090 21238 25382 28126 30340 36260 40180 42476 50764 53095 56252 60680 63455 70315 72520 74333 80360 84952 101528 106190 112504 126910 140630 148666 212380 253820 281260 297332 371665 424760 507640 520331 562520 594664 743330 1040662 1486660 2081324 2601655 2973320 4162648 5203310 10406620 20813240
- Sum of all divisors σ(n): 57456000
- Sum of proper divisors (its aliquot sum) s(n): 36642760
- 20813240 is an abundant number, because the sum of its proper divisors (36642760) is greater than itself. Its abundance is 15829520
Bases of 20813240
- Binary: 10011110110010101101110002
- Hexadecimal: 0x13D95B8
- Base-36: CE3LK
Squares and roots of 20813240
- 20813240 squared (208132402) is 433190959297600
- 20813240 cubed (208132403) is 9016107401691180224000
-
The
square root of 20813240 is 4562.1530005031 -
The
cube root of 20813240 is 275.0721133195
Scales and comparisons
How big is 20813240?- 20,813,240 seconds is equal to 34 weeks, 2 days, 21 hours, 27 minutes, 20 seconds.
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To count from 1 to 20,813,240 would take you about fifty-one weeks!
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 20813240 cubic inches would be around 22.9 feet tall.
Recreational maths with 20813240
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The information we have on file for 20813240 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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