28578852 has 24 divisors (see below), whose sum is σ = 74093600. Its totient is φ = 9526248.

The previous prime is 28578821. The next prime is 28578863. The reversal of 28578852 is 25887582.

28578852 is a `hidden beast` number, since 28 + 578 + 8 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28578798 and 28578807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132202 + ... + 132417.

Almost surely, 2^28578852 is an apocalyptic number.

It is an amenable number.

28578852 is an abundant number, since it is smaller than the sum of its proper divisors (45514748).

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

28578852 is a wasteful number, since it uses less digits than its factorization.

28578852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264632 (or 264624 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 28578852 is about 5345.9191913085. The cubic root of 28578852 is about 305.7371830256.

The spelling of 28578852 in words is "twenty-eight million, five hundred seventy-eight thousand, eight hundred fifty-two".