21318816

21,318,816 is an even composite number composed of four prime numbers multiplied together.

What does the number 21318816 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

21318816 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21318816:

2⁵ × 3 × 17 × 13063

(2 × 2 × 2 × 2 × 2 × 3 × 17 × 13063)

See below for interesting mathematical facts about the number 21318816 from the Numbermatics database.

Names of 21318816

Cardinal: 21318816 can be written as Twenty-one million, three hundred eighteen thousand, eight hundred sixteen.

Scientific notation

Scientific notation: 2.1318816 × 10⁷

Factors of 21318816

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 8
Sum of prime factors: 13085

Divisors of 21318816

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 4 6 8 12 16 17 24 32 34 48 51 68 96 102 136 204 272 408 544 816 1632 13063 26126 39189 52252 78378 104504 156756 209008 222071 313512 418016 444142 627024 666213 888284 1254048 1332426 1776568 2664852 3553136 5329704 7106272 10659408 21318816
Sum of all divisors σ(n): 59258304
Sum of proper divisors (its aliquot sum) s(n): 37939488
21318816 is an abundant number, because the sum of its proper divisors (37939488) is greater than itself. Its abundance is 16620672

Bases of 21318816

Binary: 1010001010100110010100000₂
Hexadecimal: 0x1454CA0
Base-36: COXPC

Squares and roots of 21318816

21318816 squared (21318816²) is 454491915641856
21318816 cubed (21318816³) is 9689229523056249962496
The square root of 21318816 is 4617.2303386337
The cube root of 21318816 is 277.2815844849

Scales and comparisons

How big is 21318816?

21,318,816 seconds is equal to 35 weeks, 1 day, 17 hours, 53 minutes, 36 seconds.
To count from 1 to 21,318,816 would take you about six 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 21318816 cubic inches would be around 23.1 feet tall.

Recreational maths with 21318816

21318816 backwards is 61881312
The number of decimal digits it has is: 8
The sum of 21318816's digits is 30
More coming soon!

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The information we have on file for 21318816 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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