20857824
20,857,824 is an even composite number composed of four prime numbers multiplied together.
20857824 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 20857824:
25 × 34 × 13 × 619
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 13 × 619)See below for interesting mathematical facts about the number 20857824 from the Numbermatics database.
Names of 20857824
- Cardinal: 20857824 can be written as Twenty million, eight hundred fifty-seven thousand, eight hundred twenty-four.
Scientific notation
- Scientific notation: 2.0857824 × 107
Factors of 20857824
Divisors of 20857824
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 72 78 81 96 104 108 117 144 156 162 208 216 234 288 312 324 351 416 432 468 619 624 648 702 864 936 1053 1238 1248 1296 1404 1857 1872 2106 2476 2592 2808 3714 3744 4212 4952 5571 5616 7428 8047 8424 9904 11142 11232 14856 16094 16713 16848 19808 22284 24141 29712 32188 33426 33696 44568 48282 50139 59424 64376 66852 72423 89136 96564 100278 128752 133704 144846 178272 193128 200556 217269 257504 267408 289692 386256 401112 434538 534816 579384 651807 772512 802224 869076 1158768 1303614 1604448 1738152 2317536 2607228 3476304 5214456 6952608 10428912 20857824
- Sum of all divisors σ(n): 66167640
- Sum of proper divisors (its aliquot sum) s(n): 45309816
- 20857824 is an abundant number, because the sum of its proper divisors (45309816) is greater than itself. Its abundance is 24451992
Bases of 20857824
- Binary: 10011111001000011111000002
- Hexadecimal: 0x13E43E0
- Base-36: CF200
Squares and roots of 20857824
- 20857824 squared (208578242) is 435048822014976
- 20857824 cubed (208578243) is 9074171760995694772224
-
The
square root of 20857824 is 4567.0366760077 -
The
cube root of 20857824 is 275.2683837183
Scales and comparisons
How big is 20857824?- 20,857,824 seconds is equal to 34 weeks, 3 days, 9 hours, 50 minutes, 24 seconds.
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To count from 1 to 20,857,824 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 20857824 cubic inches would be around 22.9 feet tall.
Recreational maths with 20857824
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