28578832 has 20 divisors (see below), whose sum is σ = 56660560. Its totient is φ = 13956768.

The previous prime is 28578821. The next prime is 28578863. The reversal of 28578832 is 23887582.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 20082 + ... + 21457.

It is an arithmetic number, because the mean of its divisors is an integer number (2833028).

Almost surely, 2^28578832 is an apocalyptic number.

It is an amenable number.

28578832 is a deficient number, since it is larger than the sum of its proper divisors (28081728).

28578832 is a wasteful number, since it uses less digits than its factorization.

28578832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41590 (or 41584 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 28578832 is about 5345.9173207224. The cubic root of 28578832 is about 305.7371117054.

The spelling of 28578832 in words is "twenty-eight million, five hundred seventy-eight thousand, eight hundred thirty-two".