28874157 has 12 divisors (see below), whose sum is σ = 41688864. Its totient is φ = 17768400.

The previous prime is 28874149. The next prime is 28874161. The reversal of 28874157 is 75147882.

It is not a de Polignac number, because 28874157 - 2³ = 28874149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28874147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27969 + ... + 28982.

It is an arithmetic number, because the mean of its divisors is an integer number (3474072).

Almost surely, 2^28874157 is an apocalyptic number.

It is an amenable number.

28874157 is a deficient number, since it is larger than the sum of its proper divisors (12814707).

28874157 is a wasteful number, since it uses less digits than its factorization.

28874157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56980 (or 56967 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 28874157 is about 5373.4678746597. The cubic root of 28874157 is about 306.7866363996.

The spelling of 28874157 in words is "twenty-eight million, eight hundred seventy-four thousand, one hundred fifty-seven".