21316864

21,316,864 is an even composite number composed of two prime numbers multiplied together.

What does the number 21316864 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 18 divisors.

21316864 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eighteen divisors.

Prime factorization of 21316864:

2⁸ × 83269

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 83269)

See below for interesting mathematical facts about the number 21316864 from the Numbermatics database.

Names of 21316864

Cardinal: 21316864 can be written as Twenty-one million, three hundred sixteen thousand, eight hundred sixty-four.

Scientific notation

Scientific notation: 2.1316864 × 10⁷

Factors of 21316864

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 9
Sum of prime factors: 83271

Divisors of 21316864

Number of divisors d(n): 18
Complete list of divisors:
1 2 4 8 16 32 64 128 256 83269 166538 333076 666152 1332304 2664608 5329216 10658432 21316864
Sum of all divisors σ(n): 42550970
Sum of proper divisors (its aliquot sum) s(n): 21234106
21316864 is a deficient number, because the sum of its proper divisors (21234106) is less than itself. Its deficiency is 82758

Bases of 21316864

Binary: 1010001010100010100000000₂
Hexadecimal: 0x1454500
Base-36: COW74

Squares and roots of 21316864

21316864 squared (21316864²) is 454408690794496
21316864 cubed (21316864³) is 9686568262084323180544
The square root of 21316864 is 4617.0189516613
The cube root of 21316864 is 277.2731213795

Scales and comparisons

How big is 21316864?

21,316,864 seconds is equal to 35 weeks, 1 day, 17 hours, 21 minutes, 4 seconds.
To count from 1 to 21,316,864 would take you about six days!

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 21316864 cubic inches would be around 23.1 feet tall.

Recreational maths with 21316864

21316864 backwards is 46861312
The number of decimal digits it has is: 8
The sum of 21316864's digits is 31
More coming soon!

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The information we have on file for 21316864 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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