728928

728,928 is an even composite number composed of three prime numbers multiplied together.

What does the number 728928 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 36 divisors.

728928 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 728928:

2⁵ × 3² × 2531

(2 × 2 × 2 × 2 × 2 × 3 × 3 × 2531)

See below for interesting mathematical facts about the number 728928 from the Numbermatics database.

Names of 728928

Cardinal: 728928 can be written as Seven hundred twenty-eight thousand, nine hundred twenty-eight.

Scientific notation

Scientific notation: 7.28928 × 10⁵

Factors of 728928

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 2536

Divisors of 728928

Number of divisors d(n): 36
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 2531 5062 7593 10124 15186 20248 22779 30372 40496 45558 60744 80992 91116 121488 182232 242976 364464 728928
Sum of all divisors σ(n): 2073708
Sum of proper divisors (its aliquot sum) s(n): 1344780
728928 is an abundant number, because the sum of its proper divisors (1344780) is greater than itself. Its abundance is 615852

Bases of 728928

Binary: 10110001111101100000₂
Hexadecimal: 0xB1F60
Base-36: FMG0

Squares and roots of 728928

728928 squared (728928²) is 531336029184
728928 cubed (728928³) is 387305709081034752
The square root of 728928 is 853.7728035023
The cube root of 728928 is 89.9970369395

Scales and comparisons

How big is 728928?

728,928 seconds is equal to 1 week, 1 day, 10 hours, 28 minutes, 48 seconds.
To count from 1 to 728,928 would take you about ten hours!

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 728928 cubic inches would be around 7.5 feet tall.

Recreational maths with 728928

728928 backwards is 829827
728928 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 728928's digits is 36
More coming soon!

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The information we have on file for 728928 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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