21997664

21,997,664 is an even composite number composed of three prime numbers multiplied together.

What does the number 21997664 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

21997664 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21997664:

2⁵ × 13 × 52879

(2 × 2 × 2 × 2 × 2 × 13 × 52879)

See below for interesting mathematical facts about the number 21997664 from the Numbermatics database.

Names of 21997664

Cardinal: 21997664 can be written as Twenty-one million, nine hundred ninety-seven thousand, six hundred sixty-four.

Scientific notation

Scientific notation: 2.1997664 × 10⁷

Factors of 21997664

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 52894

Divisors of 21997664

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 8 13 16 26 32 52 104 208 416 52879 105758 211516 423032 687427 846064 1374854 1692128 2749708 5499416 10998832 21997664
Sum of all divisors σ(n): 46640160
Sum of proper divisors (its aliquot sum) s(n): 24642496
21997664 is an abundant number, because the sum of its proper divisors (24642496) is greater than itself. Its abundance is 2644832

Bases of 21997664

Binary: 1010011111010100001100000₂
Hexadecimal: 0x14FA860
Base-36: D3HI8

Squares and roots of 21997664

21997664 squared (21997664²) is 483897221456896
21997664 cubed (21997664³) is 10644608488142388690944
The square root of 21997664 is 4690.1667347761
The cube root of 21997664 is 280.1940151933

Scales and comparisons

How big is 21997664?

21,997,664 seconds is equal to 36 weeks, 2 days, 14 hours, 27 minutes, 44 seconds.
To count from 1 to 21,997,664 would take you about two weeks!

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 21997664 cubic inches would be around 23.3 feet tall.

Recreational maths with 21997664

21997664 backwards is 46679912
The number of decimal digits it has is: 8
The sum of 21997664's digits is 44
More coming soon!

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The information we have on file for 21997664 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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