21206490

21,206,490 is an even composite number composed of four prime numbers multiplied together.

What does the number 21206490 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

21206490 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21206490:

2 × 3 × 5 × 706883

See below for interesting mathematical facts about the number 21206490 from the Numbermatics database.

Names of 21206490

Cardinal: 21206490 can be written as Twenty-one million, two hundred six thousand, four hundred ninety.

Scientific notation

Scientific notation: 2.120649 × 10⁷

Factors of 21206490

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 706893

Divisors of 21206490

Number of divisors d(n): 16
Complete list of divisors:
1 2 3 5 6 10 15 30 706883 1413766 2120649 3534415 4241298 7068830 10603245 21206490
Sum of all divisors σ(n): 50895648
Sum of proper divisors (its aliquot sum) s(n): 29689158
21206490 is an abundant number, because the sum of its proper divisors (29689158) is greater than itself. Its abundance is 8482668

Bases of 21206490

Binary: 1010000111001010111011010₂
Hexadecimal: 0x14395DA
Base-36: CMJ16

Squares and roots of 21206490

21206490 squared (21206490²) is 449715218120100
21206490 cubed (21206490³) is 9536881275911719449000
The square root of 21206490 is 4605.0504883225
The cube root of 21206490 is 276.7937401131

Scales and comparisons

How big is 21206490?

21,206,490 seconds is equal to 35 weeks, 10 hours, 41 minutes, 30 seconds.
To count from 1 to 21,206,490 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 21206490 cubic inches would be around 23.1 feet tall.

Recreational maths with 21206490

21206490 backwards is 09460212
The number of decimal digits it has is: 8
The sum of 21206490's digits is 24
More coming soon!

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The information we have on file for 21206490 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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