28528874 has 16 divisors (see below), whose sum is σ = 46932480. Its totient is φ = 12898560.

The previous prime is 28528867. The next prime is 28528879. The reversal of 28528874 is 47882582.

It is not an unprimeable number, because it can be changed into a prime (28528879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (2933280).

Almost surely, 2^28528874 is an apocalyptic number.

28528874 is a deficient number, since it is larger than the sum of its proper divisors (18403606).

28528874 is a wasteful number, since it uses less digits than its factorization.

28528874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925.

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

The square root of 28528874 is about 5341.2427392883. The cubic root of 28528874 is about 305.5588571226.

The spelling of 28528874 in words is "twenty-eight million, five hundred twenty-eight thousand, eight hundred seventy-four".