21041920
21,041,920 is an even composite number composed of four prime numbers multiplied together.
21041920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21041920:
28 × 5 × 17 × 967
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 17 × 967)See below for interesting mathematical facts about the number 21041920 from the Numbermatics database.
Names of 21041920
- Cardinal: 21041920 can be written as Twenty-one million, forty-one thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.104192 × 107
Factors of 21041920
Divisors of 21041920
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 4 5 8 10 16 17 20 32 34 40 64 68 80 85 128 136 160 170 256 272 320 340 544 640 680 967 1088 1280 1360 1934 2176 2720 3868 4352 4835 5440 7736 9670 10880 15472 16439 19340 21760 30944 32878 38680 61888 65756 77360 82195 123776 131512 154720 164390 247552 263024 309440 328780 526048 618880 657560 1052096 1237760 1315120 2104192 2630240 4208384 5260480 10520960 21041920
- Sum of all divisors σ(n): 53421984
- Sum of proper divisors (its aliquot sum) s(n): 32380064
- 21041920 is an abundant number, because the sum of its proper divisors (32380064) is greater than itself. Its abundance is 11338144
Bases of 21041920
- Binary: 10100000100010011000000002
- Hexadecimal: 0x1411300
- Base-36: CJ01S
Squares and roots of 21041920
- 21041920 squared (210419202) is 442762397286400
- 21041920 cubed (210419203) is 9316570942708645888000
-
The
square root of 21041920 is 4587.1472616431 -
The
cube root of 21041920 is 276.0758735601
Scales and comparisons
How big is 21041920?- 21,041,920 seconds is equal to 34 weeks, 5 days, 12 hours, 58 minutes, 40 seconds.
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To count from 1 to 21,041,920 would take you about seven 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 21041920 cubic inches would be around 23 feet tall.
Recreational maths with 21041920
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