28912528 has 20 divisors (see below), whose sum is σ = 58966960. Its totient is φ = 13695264.

The previous prime is 28912523. The next prime is 28912531. The reversal of 28912528 is 82521982.

It is not an unprimeable number, because it can be changed into a prime (28912523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47250 + ... + 47857.

It is an arithmetic number, because the mean of its divisors is an integer number (2948348).

Almost surely, 2^28912528 is an apocalyptic number.

It is an amenable number.

28912528 is an abundant number, since it is smaller than the sum of its proper divisors (30054432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28912528 is a wasteful number, since it uses less digits than its factorization.

28912528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95134 (or 95128 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 28912528 is about 5377.0371023455. The cubic root of 28912528 is about 306.9224729700.

The spelling of 28912528 in words is "twenty-eight million, nine hundred twelve thousand, five hundred twenty-eight".