21423920
21,423,920 is an even composite number composed of five prime numbers multiplied together.
21423920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 21423920:
24 × 5 × 7 × 67 × 571
(2 × 2 × 2 × 2 × 5 × 7 × 67 × 571)See below for interesting mathematical facts about the number 21423920 from the Numbermatics database.
Names of 21423920
- Cardinal: 21423920 can be written as Twenty-one million, four hundred twenty-three thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.142392 × 107
Factors of 21423920
Divisors of 21423920
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 56 67 70 80 112 134 140 268 280 335 469 536 560 571 670 938 1072 1142 1340 1876 2284 2345 2680 2855 3752 3997 4568 4690 5360 5710 7504 7994 9136 9380 11420 15988 18760 19985 22840 31976 37520 38257 39970 45680 63952 76514 79940 153028 159880 191285 267799 306056 319760 382570 535598 612112 765140 1071196 1338995 1530280 2142392 2677990 3060560 4284784 5355980 10711960 21423920
- Sum of all divisors σ(n): 57877248
- Sum of proper divisors (its aliquot sum) s(n): 36453328
- 21423920 is an abundant number, because the sum of its proper divisors (36453328) is greater than itself. Its abundance is 15029408
Bases of 21423920
- Binary: 10100011011100111001100002
- Hexadecimal: 0x146E730
- Base-36: CR6SW
Squares and roots of 21423920
- 21423920 squared (214239202) is 458984348166400
- 21423920 cubed (214239203) is 9833243956369100288000
-
The
square root of 21423920 is 4628.5980598881 -
The
cube root of 21423920 is 277.7365134557
Scales and comparisons
How big is 21423920?- 21,423,920 seconds is equal to 35 weeks, 2 days, 23 hours, 5 minutes, 20 seconds.
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To count from 1 to 21,423,920 would take you about twenty-two 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 21423920 cubic inches would be around 23.1 feet tall.
Recreational maths with 21423920
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The information we have on file for 21423920 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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