729128

729,128 is an even composite number composed of two prime numbers multiplied together.

What does the number 729128 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

729128 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 729128:

2³ × 91141

(2 × 2 × 2 × 91141)

See below for interesting mathematical facts about the number 729128 from the Numbermatics database.

Names of 729128

Cardinal: 729128 can be written as Seven hundred twenty-nine thousand, one hundred twenty-eight.

Scientific notation

Scientific notation: 7.29128 × 10⁵

Factors of 729128

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 4
Sum of prime factors: 91143

Divisors of 729128

Number of divisors d(n): 8
Complete list of divisors:
1 2 4 8 91141 182282 364564 729128
Sum of all divisors σ(n): 1367130
Sum of proper divisors (its aliquot sum) s(n): 638002
729128 is a deficient number, because the sum of its proper divisors (638002) is less than itself. Its deficiency is 91126

Bases of 729128

Binary: 10110010000000101000₂
Hexadecimal: 0xB2028
Base-36: FMLK

Squares and roots of 729128

729128 squared (729128²) is 531627640384
729128 cubed (729128³) is 387624598177905152
The square root of 729128 is 853.8899226481
The cube root of 729128 is 90.0052671815

Scales and comparisons

How big is 729128?

729,128 seconds is equal to 1 week, 1 day, 10 hours, 32 minutes, 8 seconds.
To count from 1 to 729,128 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 729128 cubic inches would be around 7.5 feet tall.

Recreational maths with 729128

729128 backwards is 821927
The number of decimal digits it has is: 6
The sum of 729128's digits is 29
More coming soon!

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The information we have on file for 729128 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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