20842640
20,842,640 is an even composite number composed of five prime numbers multiplied together.
20842640 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 20842640:
24 × 5 × 72 × 13 × 409
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 13 × 409)See below for interesting mathematical facts about the number 20842640 from the Numbermatics database.
Names of 20842640
- Cardinal: 20842640 can be written as Twenty million, eight hundred forty-two thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.084264 × 107
Factors of 20842640
Divisors of 20842640
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 49 52 56 65 70 80 91 98 104 112 130 140 182 196 208 245 260 280 364 392 409 455 490 520 560 637 728 784 818 910 980 1040 1274 1456 1636 1820 1960 2045 2548 2863 3185 3272 3640 3920 4090 5096 5317 5726 6370 6544 7280 8180 10192 10634 11452 12740 14315 16360 20041 21268 22904 25480 26585 28630 32720 37219 40082 42536 45808 50960 53170 57260 74438 80164 85072 100205 106340 114520 148876 160328 186095 200410 212680 229040 260533 297752 320656 372190 400820 425360 521066 595504 744380 801640 1042132 1302665 1488760 1603280 2084264 2605330 2977520 4168528 5210660 10421320 20842640
- Sum of all divisors σ(n): 60855480
- Sum of proper divisors (its aliquot sum) s(n): 40012840
- 20842640 is an abundant number, because the sum of its proper divisors (40012840) is greater than itself. Its abundance is 19170200
Bases of 20842640
- Binary: 10011111000001000100100002
- Hexadecimal: 0x13E0890
- Base-36: CEQA8
Squares and roots of 20842640
- 20842640 squared (208426402) is 434415642169600
- 20842640 cubed (208426403) is 9054368840109791744000
-
The
square root of 20842640 is 4565.3740262983 -
The
cube root of 20842640 is 275.2015712233
Scales and comparisons
How big is 20842640?- 20,842,640 seconds is equal to 34 weeks, 3 days, 5 hours, 37 minutes, 20 seconds.
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To count from 1 to 20,842,640 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 20842640 cubic inches would be around 22.9 feet tall.
Recreational maths with 20842640
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The information we have on file for 20842640 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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