21195990

21,195,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 21195990 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21195990 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21195990:

2 × 3² × 5 × 43 × 5477

(2 × 3 × 3 × 5 × 43 × 5477)

See below for interesting mathematical facts about the number 21195990 from the Numbermatics database.

Names of 21195990

Cardinal: 21195990 can be written as Twenty-one million, one hundred ninety-five thousand, nine hundred ninety.

Scientific notation

Scientific notation: 2.119599 × 10⁷

Factors of 21195990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 5530

Divisors of 21195990

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 5 6 9 10 15 18 30 43 45 86 90 129 215 258 387 430 645 774 1290 1935 3870 5477 10954 16431 27385 32862 49293 54770 82155 98586 164310 235511 246465 471022 492930 706533 1177555 1413066 2119599 2355110 3532665 4239198 7065330 10597995 21195990
Sum of all divisors σ(n): 56401488
Sum of proper divisors (its aliquot sum) s(n): 35205498
21195990 is an abundant number, because the sum of its proper divisors (35205498) is greater than itself. Its abundance is 14009508

Bases of 21195990

Binary: 1010000110110110011010110₂
Hexadecimal: 0x1436CD6
Base-36: CMAXI

Squares and roots of 21195990

21195990 squared (21195990²) is 449269992080100
21195990 cubed (21195990³) is 9522722259429878799000
The square root of 21195990 is 4603.9102945213
The cube root of 21195990 is 276.7480494767

Scales and comparisons

How big is 21195990?

21,195,990 seconds is equal to 35 weeks, 7 hours, 46 minutes, 30 seconds.
To count from 1 to 21,195,990 would take you about three 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 21195990 cubic inches would be around 23.1 feet tall.

Recreational maths with 21195990

21195990 backwards is 09959112
The number of decimal digits it has is: 8
The sum of 21195990's digits is 36
More coming soon!

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The information we have on file for 21195990 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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