21220
21,220 is an even composite number composed of three prime numbers multiplied together.
21220 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.
Prime factorization of 21220:
22 × 5 × 1061
(2 × 2 × 5 × 1061)See below for interesting mathematical facts about the number 21220 from the Numbermatics database.
Names of 21220
- Cardinal: 21220 can be written as Twenty-one thousand, two hundred twenty.
Scientific notation
- Scientific notation: 2.122 × 104
Factors of 21220
Divisors of 21220
Bases of 21220
- Binary: 1010010111001002
- Hexadecimal: 0x52E4
- Base-36: GDG
Squares and roots of 21220
- 21220 squared (212202) is 450288400
- 21220 cubed (212203) is 9555119848000
-
The
square root of 21220 is 145.6708618771 -
The
cube root of 21220 is 27.6852506551
Scales and comparisons
How big is 21220?- 21,220 seconds is equal to 5 hours, 53 minutes, 40 seconds.
-
To count from 1 to 21,220 would take you about five 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 21220 cubic inches would be around 2.3 feet tall.
Recreational maths with 21220
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