20745
20,745 is an odd composite number composed of three prime numbers multiplied together.
20745 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.
Prime factorization of 20745:
32 × 5 × 461
(3 × 3 × 5 × 461)See below for interesting mathematical facts about the number 20745 from the Numbermatics database.
Names of 20745
- Cardinal: 20745 can be written as Twenty thousand, seven hundred forty-five.
Scientific notation
- Scientific notation: 2.0745 × 104
Factors of 20745
Divisors of 20745
Bases of 20745
- Binary: 1010001000010012
- Hexadecimal: 0x5109
- Base-36: G09
Squares and roots of 20745
- 20745 squared (207452) is 430355025
- 20745 cubed (207453) is 8927714993625
-
The
square root of 20745 is 144.0312466099 -
The
cube root of 20745 is 27.4771159487
Scales and comparisons
How big is 20745?- 20,745 seconds is equal to 5 hours, 45 minutes, 45 seconds.
-
To count from 1 to 20,745 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 20745 cubic inches would be around 2.3 feet tall.
Recreational maths with 20745
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