21324728

21,324,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 21324728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

21324728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21324728:

2³ × 37 × 72043

(2 × 2 × 2 × 37 × 72043)

See below for interesting mathematical facts about the number 21324728 from the Numbermatics database.

Names of 21324728

Cardinal: 21324728 can be written as Twenty-one million, three hundred twenty-four thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.1324728 × 10⁷

Factors of 21324728

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 72082

Divisors of 21324728

Number of divisors d(n): 16
Complete list of divisors:
1 2 4 8 37 74 148 296 72043 144086 288172 576344 2665591 5331182 10662364 21324728
Sum of all divisors σ(n): 41065080
Sum of proper divisors (its aliquot sum) s(n): 19740352
21324728 is a deficient number, because the sum of its proper divisors (19740352) is less than itself. Its deficiency is 1584376

Bases of 21324728

Binary: 1010001010110001110111000₂
Hexadecimal: 0x14563B8
Base-36: CP29K

Squares and roots of 21324728

21324728 squared (21324728²) is 454744024273984
21324728 cubed (21324728³) is 9697292627268106276352
The square root of 21324728 is 4617.8705048973
The cube root of 21324728 is 277.3072134445

Scales and comparisons

How big is 21324728?

21,324,728 seconds is equal to 35 weeks, 1 day, 19 hours, 32 minutes, 8 seconds.
To count from 1 to 21,324,728 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 21324728 cubic inches would be around 23.1 feet tall.

Recreational maths with 21324728

21324728 backwards is 82742312
The number of decimal digits it has is: 8
The sum of 21324728's digits is 29
More coming soon!

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The information we have on file for 21324728 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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