21290
21,290 is an even composite number composed of three prime numbers multiplied together.
21290 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.
Prime factorization of 21290:
2 × 5 × 2129
See below for interesting mathematical facts about the number 21290 from the Numbermatics database.
Names of 21290
- Cardinal: 21290 can be written as Twenty-one thousand, two hundred ninety.
Scientific notation
- Scientific notation: 2.129 × 104
Factors of 21290
Divisors of 21290
Bases of 21290
- Binary: 1010011001010102
- Hexadecimal: 0x532A
- Base-36: GFE
Squares and roots of 21290
- 21290 squared (212902) is 453264100
- 21290 cubed (212903) is 9649992689000
-
The
square root of 21290 is 145.9109317357 -
The
cube root of 21290 is 27.7156597105
Scales and comparisons
How big is 21290?- 21,290 seconds is equal to 5 hours, 54 minutes, 50 seconds.
-
To count from 1 to 21,290 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 21290 cubic inches would be around 2.3 feet tall.
Recreational maths with 21290
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