21428964
21,428,964 is an even composite number composed of five prime numbers multiplied together.
21428964 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21428964:
22 × 32 × 43 × 109 × 127
(2 × 2 × 3 × 3 × 43 × 109 × 127)See below for interesting mathematical facts about the number 21428964 from the Numbermatics database.
Names of 21428964
- Cardinal: 21428964 can be written as Twenty-one million, four hundred twenty-eight thousand, nine hundred sixty-four.
Scientific notation
- Scientific notation: 2.1428964 × 107
Factors of 21428964
Divisors of 21428964
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 9 12 18 36 43 86 109 127 129 172 218 254 258 327 381 387 436 508 516 654 762 774 981 1143 1308 1524 1548 1962 2286 3924 4572 4687 5461 9374 10922 13843 14061 16383 18748 21844 27686 28122 32766 41529 42183 49149 55372 56244 65532 83058 84366 98298 124587 166116 168732 196596 249174 498348 595249 1190498 1785747 2380996 3571494 5357241 7142988 10714482 21428964
- Sum of all divisors σ(n): 56376320
- Sum of proper divisors (its aliquot sum) s(n): 34947356
- 21428964 is an abundant number, because the sum of its proper divisors (34947356) is greater than itself. Its abundance is 13518392
Bases of 21428964
- Binary: 10100011011111010111001002
- Hexadecimal: 0x146FAE4
- Base-36: CRAP0
Squares and roots of 21428964
- 21428964 squared (214289642) is 459200498113296
- 21428964 cubed (214289643) is 9840190942851887905344
-
The
square root of 21428964 is 4629.1429012291 -
The
cube root of 21428964 is 277.7583083005
Scales and comparisons
How big is 21428964?- 21,428,964 seconds is equal to 35 weeks, 3 days, 29 minutes, 24 seconds.
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To count from 1 to 21,428,964 would take you about forty-four minutes!
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 21428964 cubic inches would be around 23.1 feet tall.
Recreational maths with 21428964
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The information we have on file for 21428964 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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