28638832 has 10 divisors (see below), whose sum is σ = 55487768. Its totient is φ = 14319408.

The previous prime is 28638821. The next prime is 28638847. The reversal of 28638832 is 23883682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894948 + ... + 894979.

Almost surely, 2^28638832 is an apocalyptic number.

It is an amenable number.

28638832 is a deficient number, since it is larger than the sum of its proper divisors (26848936).

28638832 is a wasteful number, since it uses less digits than its factorization.

28638832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789935 (or 1789929 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 28638832 is about 5351.5261374677. The cubic root of 28638832 is about 305.9509226830.

The spelling of 28638832 in words is "twenty-eight million, six hundred thirty-eight thousand, eight hundred thirty-two".