21138432
21,138,432 is an even composite number composed of four prime numbers multiplied together.
21138432 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty-eight divisors.
Prime factorization of 21138432:
210 × 3 × 7 × 983
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 983)See below for interesting mathematical facts about the number 21138432 from the Numbermatics database.
Names of 21138432
- Cardinal: 21138432 can be written as Twenty-one million, one hundred thirty-eight thousand, four hundred thirty-two.
Scientific notation
- Scientific notation: 2.1138432 × 107
Factors of 21138432
Divisors of 21138432
- Number of divisors d(n): 88
-
Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 983 1024 1344 1536 1792 1966 2688 2949 3072 3584 3932 5376 5898 6881 7168 7864 10752 11796 13762 15728 20643 21504 23592 27524 31456 41286 47184 55048 62912 82572 94368 110096 125824 165144 188736 220192 251648 330288 377472 440384 503296 660576 754944 880768 1006592 1321152 1509888 1761536 2642304 3019776 3523072 5284608 7046144 10569216 21138432
- Sum of all divisors σ(n): 64455936
- Sum of proper divisors (its aliquot sum) s(n): 43317504
- 21138432 is an abundant number, because the sum of its proper divisors (43317504) is greater than itself. Its abundance is 22179072
Bases of 21138432
- Binary: 10100001010001100000000002
- Hexadecimal: 0x1428C00
- Base-36: CL2IO
Squares and roots of 21138432
- 21138432 squared (211384322) is 446833307418624
- 21138432 cubed (211384323) is 9445355484203678957568
-
The
square root of 21138432 is 4597.6550544815 -
The
cube root of 21138432 is 276.4973180169
Scales and comparisons
How big is 21138432?- 21,138,432 seconds is equal to 34 weeks, 6 days, 15 hours, 47 minutes, 12 seconds.
-
To count from 1 to 21,138,432 would take you about two days!
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 21138432 cubic inches would be around 23 feet tall.
Recreational maths with 21138432
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The information we have on file for 21138432 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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