21684942

21,684,942 is an even composite number composed of four prime numbers multiplied together.

What does the number 21684942 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

21684942 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21684942:

2 × 3³ × 73 × 5501

(2 × 3 × 3 × 3 × 73 × 5501)

See below for interesting mathematical facts about the number 21684942 from the Numbermatics database.

Names of 21684942

Cardinal: 21684942 can be written as Twenty-one million, six hundred eighty-four thousand, nine hundred forty-two.

Scientific notation

Scientific notation: 2.1684942 × 10⁷

Factors of 21684942

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 5579

Divisors of 21684942

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 6 9 18 27 54 73 146 219 438 657 1314 1971 3942 5501 11002 16503 33006 49509 99018 148527 297054 401573 803146 1204719 2409438 3614157 7228314 10842471 21684942
Sum of all divisors σ(n): 48857760
Sum of proper divisors (its aliquot sum) s(n): 27172818
21684942 is an abundant number, because the sum of its proper divisors (27172818) is greater than itself. Its abundance is 5487876

Bases of 21684942

Binary: 1010010101110001011001110₂
Hexadecimal: 0x14AE2CE
Base-36: CWS7I

Squares and roots of 21684942

21684942 squared (21684942²) is 470236709543364
21684942 cubed (21684942³) is 10197055772718694824888
The square root of 21684942 is 4656.7093531807
The cube root of 21684942 is 278.8599134873

Scales and comparisons

How big is 21684942?

21,684,942 seconds is equal to 35 weeks, 5 days, 23 hours, 35 minutes, 42 seconds.
To count from 1 to 21,684,942 would take you about five 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 21684942 cubic inches would be around 23.2 feet tall.

Recreational maths with 21684942

21684942 backwards is 24948612
The number of decimal digits it has is: 8
The sum of 21684942's digits is 36
More coming soon!

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The information we have on file for 21684942 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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