21213690

21,213,690 is an even composite number composed of five prime numbers multiplied together.

What does the number 21213690 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

21213690 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21213690:

2 × 3 × 5 × 19 × 37217

See below for interesting mathematical facts about the number 21213690 from the Numbermatics database.

Names of 21213690

Cardinal: 21213690 can be written as Twenty-one million, two hundred thirteen thousand, six hundred ninety.

Scientific notation

Scientific notation: 2.121369 × 10⁷

Factors of 21213690

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 37246

Divisors of 21213690

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 37217 74434 111651 186085 223302 372170 558255 707123 1116510 1414246 2121369 3535615 4242738 7071230 10606845 21213690
Sum of all divisors σ(n): 53593920
Sum of proper divisors (its aliquot sum) s(n): 32380230
21213690 is an abundant number, because the sum of its proper divisors (32380230) is greater than itself. Its abundance is 11166540

Bases of 21213690

Binary: 1010000111011000111111010₂
Hexadecimal: 0x143B1FA
Base-36: CMOL6

Squares and roots of 21213690

21213690 squared (21213690²) is 450020643416100
21213690 cubed (21213690³) is 9546598423029686409000
The square root of 21213690 is 4605.8321723659
The cube root of 21213690 is 276.8250621193

Scales and comparisons

How big is 21213690?

21,213,690 seconds is equal to 35 weeks, 12 hours, 41 minutes, 30 seconds.
To count from 1 to 21,213,690 would take you about four 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 21213690 cubic inches would be around 23.1 feet tall.

Recreational maths with 21213690

21213690 backwards is 09631212
The number of decimal digits it has is: 8
The sum of 21213690's digits is 24
More coming soon!

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The information we have on file for 21213690 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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