728289

728,289 is an odd composite number composed of three prime numbers multiplied together.

What does the number 728289 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

728289 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 728289:

3² × 19 × 4259

(3 × 3 × 19 × 4259)

See below for interesting mathematical facts about the number 728289 from the Numbermatics database.

Names of 728289

Cardinal: 728289 can be written as Seven hundred twenty-eight thousand, two hundred eighty-nine.

Scientific notation

Scientific notation: 7.28289 × 10⁵

Factors of 728289

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 4281

Divisors of 728289

Number of divisors d(n): 12
Complete list of divisors:
1 3 9 19 57 171 4259 12777 38331 80921 242763 728289
Sum of all divisors σ(n): 1107600
Sum of proper divisors (its aliquot sum) s(n): 379311
728289 is a deficient number, because the sum of its proper divisors (379311) is less than itself. Its deficiency is 348978

Bases of 728289

Binary: 10110001110011100001₂
Hexadecimal: 0xB1CE1
Base-36: FLY9

Squares and roots of 728289

728289 squared (728289²) is 530404867521
728289 cubed (728289³) is 386288030562001569
The square root of 728289 is 853.3985001159
The cube root of 728289 is 89.9707312233

Scales and comparisons

How big is 728289?

728,289 seconds is equal to 1 week, 1 day, 10 hours, 18 minutes, 9 seconds.
To count from 1 to 728,289 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 728289 cubic inches would be around 7.5 feet tall.

Recreational maths with 728289

728289 backwards is 982827
The number of decimal digits it has is: 6
The sum of 728289's digits is 36
More coming soon!

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The information we have on file for 728289 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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