20961728

20,961,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 20961728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 28 divisors.

20961728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-eight divisors.

Prime factorization of 20961728:

2⁶ × 107 × 3061

(2 × 2 × 2 × 2 × 2 × 2 × 107 × 3061)

See below for interesting mathematical facts about the number 20961728 from the Numbermatics database.

Names of 20961728

Cardinal: 20961728 can be written as Twenty million, nine hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.0961728 × 10⁷

Factors of 20961728

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 3170

Divisors of 20961728

Number of divisors d(n): 28
Complete list of divisors:
1 2 4 8 16 32 64 107 214 428 856 1712 3061 3424 6122 6848 12244 24488 48976 97952 195904 327527 655054 1310108 2620216 5240432 10480864 20961728
Sum of all divisors σ(n): 41998392
Sum of proper divisors (its aliquot sum) s(n): 21036664
20961728 is an abundant number, because the sum of its proper divisors (21036664) is greater than itself. Its abundance is 74936

Bases of 20961728

Binary: 1001111111101100111000000₂
Hexadecimal: 0x13FD9C0
Base-36: CHA68

Squares and roots of 20961728

20961728 squared (20961728²) is 439394040745984
20961728 cubed (20961728³) is 9210458366938233700352
The square root of 20961728 is 4578.3979730909
The cube root of 20961728 is 275.7247132637

Scales and comparisons

How big is 20961728?

20,961,728 seconds is equal to 34 weeks, 4 days, 14 hours, 42 minutes, 8 seconds.
To count from 1 to 20,961,728 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 20961728 cubic inches would be around 23 feet tall.

Recreational maths with 20961728

20961728 backwards is 82716902
The number of decimal digits it has is: 8
The sum of 20961728's digits is 35
More coming soon!

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The information we have on file for 20961728 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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