21420808

21,420,808 is an even composite number composed of three prime numbers multiplied together.

What does the number 21420808 look like?

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

21420808 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 21420808:

2³ × 163 × 16427

(2 × 2 × 2 × 163 × 16427)

See below for interesting mathematical facts about the number 21420808 from the Numbermatics database.

Names of 21420808

Cardinal: 21420808 can be written as Twenty-one million, four hundred twenty thousand, eight hundred eight.

Scientific notation

Scientific notation: 2.1420808 × 10⁷

Factors of 21420808

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 16592

Divisors of 21420808

Number of divisors d(n): 16
Complete list of divisors:
1 2 4 8 163 326 652 1304 16427 32854 65708 131416 2677601 5355202 10710404 21420808
Sum of all divisors σ(n): 40412880
Sum of proper divisors (its aliquot sum) s(n): 18992072
21420808 is a deficient number, because the sum of its proper divisors (18992072) is less than itself. Its deficiency is 2428736

Bases of 21420808

Binary: 1010001101101101100001000₂
Hexadecimal: 0x146DB08
Base-36: CR4EG

Squares and roots of 21420808

21420808 squared (21420808²) is 458851015372864
21420808 cubed (21420808³) is 9828959500907168154112
The square root of 21420808 is 4628.2618767741
The cube root of 21420808 is 277.7230649693

Scales and comparisons

How big is 21420808?

21,420,808 seconds is equal to 35 weeks, 2 days, 22 hours, 13 minutes, 28 seconds.
To count from 1 to 21,420,808 would take you about twenty-one 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 21420808 cubic inches would be around 23.1 feet tall.

Recreational maths with 21420808

21420808 backwards is 80802412
The number of decimal digits it has is: 8
The sum of 21420808's digits is 25
More coming soon!

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The information we have on file for 21420808 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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