20489728

20,489,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 20489728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 40 divisors.

20489728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 20489728:

2⁹ × 7 × 5717

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 5717)

See below for interesting mathematical facts about the number 20489728 from the Numbermatics database.

Names of 20489728

Cardinal: 20489728 can be written as Twenty million, four hundred eighty-nine thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.0489728 × 10⁷

Factors of 20489728

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 11
Sum of prime factors: 5726

Divisors of 20489728

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 512 896 1792 3584 5717 11434 22868 40019 45736 80038 91472 160076 182944 320152 365888 640304 731776 1280608 1463552 2561216 2927104 5122432 10244864 20489728
Sum of all divisors σ(n): 46796112
Sum of proper divisors (its aliquot sum) s(n): 26306384
20489728 is an abundant number, because the sum of its proper divisors (26306384) is greater than itself. Its abundance is 5816656

Bases of 20489728

Binary: 1001110001010011000000000₂
Hexadecimal: 0x138A600
Base-36: C75Z4

Squares and roots of 20489728

20489728 squared (20489728²) is 419828953513984
20489728 cubed (20489728³) is 8602181064026176356352
The square root of 20489728 is 4526.5580742987
The cube root of 20489728 is 273.6394640017

Scales and comparisons

How big is 20489728?

20,489,728 seconds is equal to 33 weeks, 6 days, 3 hours, 35 minutes, 28 seconds.
To count from 1 to 20,489,728 would take you about fifty 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 20489728 cubic inches would be around 22.8 feet tall.

Recreational maths with 20489728

20489728 backwards is 82798402
The number of decimal digits it has is: 8
The sum of 20489728's digits is 40
More coming soon!

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The information we have on file for 20489728 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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