21707990

21,707,990 is an even composite number composed of four prime numbers multiplied together.

What does the number 21707990 look like?

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

21707990 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 21707990:

2 × 5 × 89 × 24391

See below for interesting mathematical facts about the number 21707990 from the Numbermatics database.

Names of 21707990

Cardinal: 21707990 can be written as Twenty-one million, seven hundred seven thousand, nine hundred ninety.

Scientific notation

Scientific notation: 2.170799 × 10⁷

Factors of 21707990

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 24487

Divisors of 21707990

Number of divisors d(n): 16
Complete list of divisors:
1 2 5 10 89 178 445 890 24391 48782 121955 243910 2170799 4341598 10853995 21707990
Sum of all divisors σ(n): 39515040
Sum of proper divisors (its aliquot sum) s(n): 17807050
21707990 is a deficient number, because the sum of its proper divisors (17807050) is less than itself. Its deficiency is 3900940

Bases of 21707990

Binary: 1010010110011110011010110₂
Hexadecimal: 0x14B3CD6
Base-36: CX9ZQ

Squares and roots of 21707990

21707990 squared (21707990²) is 471236829840100
21707990 cubed (21707990³) is 10229604389800592399000
The square root of 21707990 is 4659.1834048469
The cube root of 21707990 is 278.9586746087

Scales and comparisons

How big is 21707990?

21,707,990 seconds is equal to 35 weeks, 6 days, 5 hours, 59 minutes, 50 seconds.
To count from 1 to 21,707,990 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 21707990 cubic inches would be around 23.2 feet tall.

Recreational maths with 21707990

21707990 backwards is 09970712
The number of decimal digits it has is: 8
The sum of 21707990's digits is 35
More coming soon!

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The information we have on file for 21707990 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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