20906721

20,906,721 is an odd composite number composed of three prime numbers multiplied together.

What does the number 20906721 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

20906721 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 20906721:

3³ × 11 × 70393

(3 × 3 × 3 × 11 × 70393)

See below for interesting mathematical facts about the number 20906721 from the Numbermatics database.

Names of 20906721

Cardinal: 20906721 can be written as Twenty million, nine hundred six thousand, seven hundred twenty-one.

Scientific notation

Scientific notation: 2.0906721 × 10⁷

Factors of 20906721

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 70407

Divisors of 20906721

Number of divisors d(n): 16
Complete list of divisors:
1 3 9 11 27 33 99 297 70393 211179 633537 774323 1900611 2322969 6968907 20906721
Sum of all divisors σ(n): 33789120
Sum of proper divisors (its aliquot sum) s(n): 12882399
20906721 is a deficient number, because the sum of its proper divisors (12882399) is less than itself. Its deficiency is 8024322

Bases of 20906721

Binary: 1001111110000001011100001₂
Hexadecimal: 0x13F02E1
Base-36: CG3Q9

Squares and roots of 20906721

20906721 squared (20906721²) is 437090982971841
20906721 cubed (20906721³) is 9138139232608030643361
The square root of 20906721 is 4572.3867946619
The cube root of 20906721 is 275.4833197521

Scales and comparisons

How big is 20906721?

20,906,721 seconds is equal to 34 weeks, 3 days, 23 hours, 25 minutes, 21 seconds.
To count from 1 to 20,906,721 would take you about fifty-one 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 20906721 cubic inches would be around 23 feet tall.

Recreational maths with 20906721

20906721 backwards is 12760902
20906721 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 20906721's digits is 27
More coming soon!

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The information we have on file for 20906721 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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