28878524 has 12 divisors (see below), whose sum is σ = 52734864. Its totient is φ = 13811424.

The previous prime is 28878517. The next prime is 28878533. The reversal of 28878524 is 42587882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156857 + ... + 157040.

It is an arithmetic number, because the mean of its divisors is an integer number (4394572).

Almost surely, 2^28878524 is an apocalyptic number.

It is an amenable number.

28878524 is a deficient number, since it is larger than the sum of its proper divisors (23856340).

28878524 is a wasteful number, since it uses less digits than its factorization.

28878524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313924 (or 313922 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The square root of 28878524 is about 5373.8742076829. The cubic root of 28878524 is about 306.8021020137.

It can be divided in two parts, 2887 and 8524, that added together give a palindrome (11411).

The spelling of 28878524 in words is "twenty-eight million, eight hundred seventy-eight thousand, five hundred twenty-four".