21429856
21,429,856 is an even composite number composed of four prime numbers multiplied together.
What does the number 21429856 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.
21429856 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 21429856:
25 × 72 × 79 × 173
(2 × 2 × 2 × 2 × 2 × 7 × 7 × 79 × 173)See below for interesting mathematical facts about the number 21429856 from the Numbermatics database.
Names of 21429856
- Cardinal: 21429856 can be written as Twenty-one million, four hundred twenty-nine thousand, eight hundred fifty-six.
Scientific notation
- Scientific notation: 2.1429856 × 107
Factors of 21429856
Divisors of 21429856
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 4 7 8 14 16 28 32 49 56 79 98 112 158 173 196 224 316 346 392 553 632 692 784 1106 1211 1264 1384 1568 2212 2422 2528 2768 3871 4424 4844 5536 7742 8477 8848 9688 13667 15484 16954 17696 19376 27334 30968 33908 38752 54668 61936 67816 95669 109336 123872 135632 191338 218672 271264 382676 437344 669683 765352 1339366 1530704 2678732 3061408 5357464 10714928 21429856
- Sum of all divisors σ(n): 49986720
- Sum of proper divisors (its aliquot sum) s(n): 28556864
- 21429856 is an abundant number, because the sum of its proper divisors (28556864) is greater than itself. Its abundance is 7127008
Bases of 21429856
- Binary: 10100011011111110011000002
- Hexadecimal: 0x146FE60
- Base-36: CRBDS
Squares and roots of 21429856
- 21429856 squared (214298562) is 459238728180736
- 21429856 cubed (214298563) is 9841419814536314454016
-
The
square root of 21429856 is 4629.2392463557 -
The
cube root of 21429856 is 277.7621622275
Scales and comparisons
How big is 21429856?- 21,429,856 seconds is equal to 35 weeks, 3 days, 44 minutes, 16 seconds.
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To count from 1 to 21,429,856 would take you about six 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 21429856 cubic inches would be around 23.1 feet tall.
Recreational maths with 21429856
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The information we have on file for 21429856 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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