21990
21,990 is an even composite number composed of four prime numbers multiplied together.
21990 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.
Prime factorization of 21990:
2 × 3 × 5 × 733
See below for interesting mathematical facts about the number 21990 from the Numbermatics database.
Names of 21990
- Cardinal: 21990 can be written as Twenty-one thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.199 × 104
Factors of 21990
Divisors of 21990
Bases of 21990
- Binary: 1010101111001102
- Hexadecimal: 0x55E6
- Base-36: GYU
Squares and roots of 21990
- 21990 squared (219902) is 483560100
- 21990 cubed (219903) is 10633486599000
-
The
square root of 21990 is 148.2902559173 -
The
cube root of 21990 is 28.0161471489
Scales and comparisons
How big is 21990?- 21,990 seconds is equal to 6 hours, 6 minutes, 30 seconds.
-
To count from 1 to 21,990 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 21990 cubic inches would be around 2.3 feet tall.
Recreational maths with 21990
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 21990 - Facts about the integer". Numbermatics.com. 2024. Web. 28 April 2024.
APA style:
Numbermatics. (2024). Number 21990 - Facts about the integer. Retrieved 28 April 2024, from https://numbermatics.com/n/21990/
Chicago style:
Numbermatics. 2024. "Number 21990 - Facts about the integer". https://numbermatics.com/n/21990/
The information we have on file for 21990 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 21990, math, Factors of 21990, curriculum, school, college, exams, university, Prime factorization of 21990, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, nine hundred ninety.