28400
28,400 is an even composite number composed of three prime numbers multiplied together.
28400 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty divisors.
Prime factorization of 28400:
24 × 52 × 71
(2 × 2 × 2 × 2 × 5 × 5 × 71)See below for interesting mathematical facts about the number 28400 from the Numbermatics database.
Names of 28400
- Cardinal: 28400 can be written as Twenty-eight thousand, four hundred.
Scientific notation
- Scientific notation: 2.84 × 104
Factors of 28400
Divisors of 28400
Bases of 28400
- Binary: 1101110111100002
- Hexadecimal: 0x6EF0
- Base-36: LWW
Squares and roots of 28400
- 28400 squared (284002) is 806560000
- 28400 cubed (284003) is 22906304000000
-
The
square root of 28400 is 168.5229954635 -
The
cube root of 28400 is 30.5098060381
Scales and comparisons
How big is 28400?- 28,400 seconds is equal to 7 hours, 53 minutes, 20 seconds.
-
To count from 1 to 28,400 would take you about seven 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 28400 cubic inches would be around 2.5 feet tall.
Recreational maths with 28400
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