21391264

21,391,264 is an even composite number composed of four prime numbers multiplied together.

What does the number 21391264 look like?

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

21391264 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 21391264:

2⁵ × 19 × 151 × 233

(2 × 2 × 2 × 2 × 2 × 19 × 151 × 233)

See below for interesting mathematical facts about the number 21391264 from the Numbermatics database.

Names of 21391264

Cardinal: 21391264 can be written as Twenty-one million, three hundred ninety-one thousand, two hundred sixty-four.

Scientific notation

Scientific notation: 2.1391264 × 10⁷

Factors of 21391264

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 8
Sum of prime factors: 405

Divisors of 21391264

Number of divisors d(n): 48
Complete list of divisors:
1 2 4 8 16 19 32 38 76 151 152 233 302 304 466 604 608 932 1208 1864 2416 2869 3728 4427 4832 5738 7456 8854 11476 17708 22952 35183 35416 45904 70366 70832 91808 140732 141664 281464 562928 668477 1125856 1336954 2673908 5347816 10695632 21391264
Sum of all divisors σ(n): 44815680
Sum of proper divisors (its aliquot sum) s(n): 23424416
21391264 is an abundant number, because the sum of its proper divisors (23424416) is greater than itself. Its abundance is 2033152

Bases of 21391264

Binary: 1010001100110011110100000₂
Hexadecimal: 0x14667A0
Base-36: CQHLS

Squares and roots of 21391264

21391264 squared (21391264²) is 457586175517696
21391264 cubed (21391264³) is 9788346683249371807744
The square root of 21391264 is 4625.0690805653
The cube root of 21391264 is 277.5953258521

Scales and comparisons

How big is 21391264?

21,391,264 seconds is equal to 35 weeks, 2 days, 14 hours, 1 minute, 4 seconds.
To count from 1 to 21,391,264 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 21391264 cubic inches would be around 23.1 feet tall.

Recreational maths with 21391264

21391264 backwards is 46219312
The number of decimal digits it has is: 8
The sum of 21391264's digits is 28
More coming soon!

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The information we have on file for 21391264 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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