28568732 has 12 divisors (see below), whose sum is σ = 51608256. Its totient is φ = 13823520.

The previous prime is 28568717. The next prime is 28568779. The reversal of 28568732 is 23786582.

It is a self number, because there is not a number n which added to its sum of digits gives 28568732.

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, 115073 + ... + 115320.

It is an arithmetic number, because the mean of its divisors is an integer number (4300688).

Almost surely, 2^28568732 is an apocalyptic number.

It is an amenable number.

28568732 is a deficient number, since it is larger than the sum of its proper divisors (23039524).

28568732 is a wasteful number, since it uses less digits than its factorization.

28568732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230428 (or 230426 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 28568732 is about 5344.9725911365. The cubic root of 28568732 is about 305.7010907714.

The spelling of 28568732 in words is "twenty-eight million, five hundred sixty-eight thousand, seven hundred thirty-two".