21108681

21,108,681 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21108681 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

21108681 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21108681:

3⁵ × 11 × 53 × 149

(3 × 3 × 3 × 3 × 3 × 11 × 53 × 149)

See below for interesting mathematical facts about the number 21108681 from the Numbermatics database.

Names of 21108681

Cardinal: 21108681 can be written as Twenty-one million, one hundred eight thousand, six hundred eighty-one.

Scientific notation

Scientific notation: 2.1108681 × 10⁷

Factors of 21108681

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 8
Sum of prime factors: 216

Divisors of 21108681

Number of divisors d(n): 48
Complete list of divisors:
1 3 9 11 27 33 53 81 99 149 159 243 297 447 477 583 891 1341 1431 1639 1749 2673 4023 4293 4917 5247 7897 12069 12879 14751 15741 23691 36207 44253 47223 71073 86867 132759 141669 213219 260601 398277 639657 781803 1918971 2345409 7036227 21108681
Sum of all divisors σ(n): 35380800
Sum of proper divisors (its aliquot sum) s(n): 14272119
21108681 is a deficient number, because the sum of its proper divisors (14272119) is less than itself. Its deficiency is 6836562

Bases of 21108681

Binary: 1010000100001011111001001₂
Hexadecimal: 0x14217C9
Base-36: CKFK9

Squares and roots of 21108681

21108681 squared (21108681²) is 445576413559761
21108681 cubed (21108681³) is 9405530374957069385241
The square root of 21108681 is 4594.4184615683
The cube root of 21108681 is 276.3675396435

Scales and comparisons

How big is 21108681?

21,108,681 seconds is equal to 34 weeks, 6 days, 7 hours, 31 minutes, 21 seconds.
To count from 1 to 21,108,681 would take you about two 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 21108681 cubic inches would be around 23 feet tall.

Recreational maths with 21108681

21108681 backwards is 18680112
21108681 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21108681's digits is 27
More coming soon!

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The information we have on file for 21108681 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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