21989997

21,989,997 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21989997 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21989997 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21989997:

3² × 97 × 25189

(3 × 3 × 97 × 25189)

See below for interesting mathematical facts about the number 21989997 from the Numbermatics database.

Names of 21989997

Cardinal: 21989997 can be written as Twenty-one million, nine hundred eighty-nine thousand, nine hundred ninety-seven.

Scientific notation

Scientific notation: 2.1989997 × 10⁷

Factors of 21989997

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 25289

Divisors of 21989997

Number of divisors d(n): 12
Complete list of divisors:
1 3 9 97 291 873 25189 75567 226701 2443333 7329999 21989997
Sum of all divisors σ(n): 32092060
Sum of proper divisors (its aliquot sum) s(n): 10102063
21989997 is a deficient number, because the sum of its proper divisors (10102063) is less than itself. Its deficiency is 11887934

Bases of 21989997

Binary: 1010011111000101001101101₂
Hexadecimal: 0x14F8A6D
Base-36: D3BL9

Squares and roots of 21989997

21989997 squared (21989997²) is 483559968060009
21989997 cubed (21989997³) is 10633482246959693729973
The square root of 21989997 is 4689.3493152033
The cube root of 21989997 is 280.1614587495

Scales and comparisons

How big is 21989997?

21,989,997 seconds is equal to 36 weeks, 2 days, 12 hours, 19 minutes, 57 seconds.
To count from 1 to 21,989,997 would take you about two weeks!

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 21989997 cubic inches would be around 23.3 feet tall.

Recreational maths with 21989997

21989997 backwards is 79998912
The number of decimal digits it has is: 8
The sum of 21989997's digits is 54
More coming soon!

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The information we have on file for 21989997 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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