639728

639,728 is an even composite number composed of two prime numbers multiplied together.

What does the number 639728 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 10 divisors.

639728 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of ten divisors.

Prime factorization of 639728:

2⁴ × 39983

(2 × 2 × 2 × 2 × 39983)

See below for interesting mathematical facts about the number 639728 from the Numbermatics database.

Names of 639728

Cardinal: 639728 can be written as Six hundred thirty-nine thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 6.39728 × 10⁵

Factors of 639728

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 5
Sum of prime factors: 39985

Divisors of 639728

Number of divisors d(n): 10
Complete list of divisors:
1 2 4 8 16 39983 79966 159932 319864 639728
Sum of all divisors σ(n): 1239504
Sum of proper divisors (its aliquot sum) s(n): 599776
639728 is a deficient number, because the sum of its proper divisors (599776) is less than itself. Its deficiency is 39952

Bases of 639728

Binary: 10011100001011110000₂
Hexadecimal: 0x9C2F0
Base-36: DPM8

Squares and roots of 639728

639728 squared (639728²) is 409251913984
639728 cubed (639728³) is 261809908429156352
The square root of 639728 is 799.8299819337
The cube root of 639728 is 86.1651774081

Scales and comparisons

How big is 639728?

639,728 seconds is equal to 1 week, 9 hours, 42 minutes, 8 seconds.
To count from 1 to 639,728 would take you about nine 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 639728 cubic inches would be around 7.2 feet tall.

Recreational maths with 639728

639728 backwards is 827936
The number of decimal digits it has is: 6
The sum of 639728's digits is 35
More coming soon!

Copy this link to share with anyone:

Share this page on social media:

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

<a href="https://numbermatics.com/n/639728/?utm_source=shared">Number 639728 - Facts about the integer</a>

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

[url=https://numbermatics.com/n/639728/?utm_source=shared]Number 639728 - Facts about the integer[/url]

Cite this page

MLA style:
"Number 639728 - Facts about the integer". Numbermatics.com. 2024. Web. 4 May 2024.

APA style:
Numbermatics. (2024). Number 639728 - Facts about the integer. Retrieved 4 May 2024, from https://numbermatics.com/n/639728/

Chicago style:
Numbermatics. 2024. "Number 639728 - Facts about the integer". https://numbermatics.com/n/639728/

The information we have on file for 639728 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!

Keywords: Divisors of 639728, math, Factors of 639728, curriculum, school, college, exams, university, Prime factorization of 639728, STEM, science, technology, engineering, physics, economics, calculator, six hundred thirty-nine thousand, seven hundred twenty-eight.