21391496

21,391,496 is an even composite number composed of three prime numbers multiplied together.

What does the number 21391496 look like?

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

21391496 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 21391496:

2³ × 7 × 381991

(2 × 2 × 2 × 7 × 381991)

See below for interesting mathematical facts about the number 21391496 from the Numbermatics database.

Names of 21391496

Cardinal: 21391496 can be written as Twenty-one million, three hundred ninety-one thousand, four hundred ninety-six.

Scientific notation

Scientific notation: 2.1391496 × 10⁷

Factors of 21391496

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 382000

Divisors of 21391496

Number of divisors d(n): 16
Complete list of divisors:
1 2 4 7 8 14 28 56 381991 763982 1527964 2673937 3055928 5347874 10695748 21391496
Sum of all divisors σ(n): 45839040
Sum of proper divisors (its aliquot sum) s(n): 24447544
21391496 is an abundant number, because the sum of its proper divisors (24447544) is greater than itself. Its abundance is 3056048

Bases of 21391496

Binary: 1010001100110100010001000₂
Hexadecimal: 0x1466888
Base-36: CQHS8

Squares and roots of 21391496

21391496 squared (21391496²) is 457596101118016
21391496 cubed (21391496³) is 9788665166681634791936
The square root of 21391496 is 4625.0941612037
The cube root of 21391496 is 277.5963294065

Scales and comparisons

How big is 21391496?

21,391,496 seconds is equal to 35 weeks, 2 days, 14 hours, 4 minutes, 56 seconds.
To count from 1 to 21,391,496 would take you about nine 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 21391496 cubic inches would be around 23.1 feet tall.

Recreational maths with 21391496

21391496 backwards is 69419312
The number of decimal digits it has is: 8
The sum of 21391496's digits is 35
More coming soon!

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The information we have on file for 21391496 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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