28
28 is an even composite number composed of two prime numbers multiplied together.
28 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.
Prime factorization of 28:
22 × 7
(2 × 2 × 7)See below for interesting mathematical facts about the number 28 from the Numbermatics database.
Names of 28
- Cardinal: 28 can be written as Twenty-eight.
Scientific notation
- Scientific notation: 2.8 × 101
Factors of 28
Divisors of 28
Bases of 28
- Binary: 111002
- Hexadecimal: 0x1C
- Base-36: S
Squares and roots of 28
Scales and comparisons
How big is 28?- A cube with a volume of 28 cubic inches would be around 0.3 feet tall.
Recreational maths with 28
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The information we have on file for 28 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!
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