What is the prime factorization of 28?

The prime factorization of 28 is 2 x 2 x 7. This means that the number 28 can be expressed as the product of the prime numbers 2 and 7. Another way to write the prime factorization of 28 is 2^2 x 7, where the exponent 2 indicates that the prime number 2 appears twice in the factorization.