20990720
20,990,720 is an even composite number composed of four prime numbers multiplied together.
20990720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred eight divisors.
Prime factorization of 20990720:
28 × 5 × 232 × 31
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 23 × 23 × 31)See below for interesting mathematical facts about the number 20990720 from the Numbermatics database.
Names of 20990720
- Cardinal: 20990720 can be written as Twenty million, nine hundred ninety thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.099072 × 107
Factors of 20990720
Divisors of 20990720
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 4 5 8 10 16 20 23 31 32 40 46 62 64 80 92 115 124 128 155 160 184 230 248 256 310 320 368 460 496 529 620 640 713 736 920 992 1058 1240 1280 1426 1472 1840 1984 2116 2480 2645 2852 2944 3565 3680 3968 4232 4960 5290 5704 5888 7130 7360 7936 8464 9920 10580 11408 14260 14720 16399 16928 19840 21160 22816 28520 29440 32798 33856 39680 42320 45632 57040 65596 67712 81995 84640 91264 114080 131192 135424 163990 169280 182528 228160 262384 327980 338560 456320 524768 655960 677120 912640 1049536 1311920 2099072 2623840 4198144 5247680 10495360 20990720
- Sum of all divisors σ(n): 54255936
- Sum of proper divisors (its aliquot sum) s(n): 33265216
- 20990720 is an abundant number, because the sum of its proper divisors (33265216) is greater than itself. Its abundance is 12274496
Bases of 20990720
- Binary: 10100000001001011000000002
- Hexadecimal: 0x1404B00
- Base-36: CHWJK
Squares and roots of 20990720
- 20990720 squared (209907202) is 440610326118400
- 20990720 cubed (209907203) is 9248727984660021248000
-
The
square root of 20990720 is 4581.5630520599 -
The
cube root of 20990720 is 275.8517722593
Scales and comparisons
How big is 20990720?- 20,990,720 seconds is equal to 34 weeks, 4 days, 22 hours, 45 minutes, 20 seconds.
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To count from 1 to 20,990,720 would take you about ten hours!
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 20990720 cubic inches would be around 23 feet tall.
Recreational maths with 20990720
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The information we have on file for 20990720 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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