21728
21,728 is an even composite number composed of three prime numbers multiplied together.
21728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.
Prime factorization of 21728:
25 × 7 × 97
(2 × 2 × 2 × 2 × 2 × 7 × 97)See below for interesting mathematical facts about the number 21728 from the Numbermatics database.
Names of 21728
- Cardinal: 21728 can be written as Twenty-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1728 × 104
Factors of 21728
Divisors of 21728
Bases of 21728
- Binary: 1010100111000002
- Hexadecimal: 0x54E0
- Base-36: GRK
Squares and roots of 21728
- 21728 squared (217282) is 472105984
- 21728 cubed (217283) is 10257918820352
-
The
square root of 21728 is 147.4042061815 -
The
cube root of 21728 is 27.9044361167
Scales and comparisons
How big is 21728?- 21,728 seconds is equal to 6 hours, 2 minutes, 8 seconds.
-
To count from 1 to 21,728 would take you about six 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 21728 cubic inches would be around 2.3 feet tall.
Recreational maths with 21728
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 21728 - Facts about the integer". Numbermatics.com. 2024. Web. 25 April 2024.
APA style:
Numbermatics. (2024). Number 21728 - Facts about the integer. Retrieved 25 April 2024, from https://numbermatics.com/n/21728/
Chicago style:
Numbermatics. 2024. "Number 21728 - Facts about the integer". https://numbermatics.com/n/21728/
The information we have on file for 21728 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 21728, math, Factors of 21728, curriculum, school, college, exams, university, Prime factorization of 21728, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, seven hundred twenty-eight.