21080728

21,080,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 21080728 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

21080728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21080728:

2³ × 19 × 331 × 419

(2 × 2 × 2 × 19 × 331 × 419)

See below for interesting mathematical facts about the number 21080728 from the Numbermatics database.

Names of 21080728

Cardinal: 21080728 can be written as Twenty-one million, eighty thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.1080728 × 10⁷

Factors of 21080728

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 771

Divisors of 21080728

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 8 19 38 76 152 331 419 662 838 1324 1676 2648 3352 6289 7961 12578 15922 25156 31844 50312 63688 138689 277378 554756 1109512 2635091 5270182 10540364 21080728
Sum of all divisors σ(n): 41832000
Sum of proper divisors (its aliquot sum) s(n): 20751272
21080728 is a deficient number, because the sum of its proper divisors (20751272) is less than itself. Its deficiency is 329456

Bases of 21080728

Binary: 1010000011010101010011000₂
Hexadecimal: 0x141AA98
Base-36: CJTZS

Squares and roots of 21080728

21080728 squared (21080728²) is 444397093009984
21080728 cubed (21080728³) is 9368214241734173988352
The square root of 21080728 is 4591.3753930603
The cube root of 21080728 is 276.2454932619

Scales and comparisons

How big is 21080728?

21,080,728 seconds is equal to 34 weeks, 5 days, 23 hours, 45 minutes, 28 seconds.
To count from 1 to 21,080,728 would take you about twenty-three hours!

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 21080728 cubic inches would be around 23 feet tall.

Recreational maths with 21080728

21080728 backwards is 82708012
The number of decimal digits it has is: 8
The sum of 21080728's digits is 28
More coming soon!

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The information we have on file for 21080728 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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