28648204 has 18 divisors (see below), whose sum is σ = 54288780. Its totient is φ = 13221936.

The previous prime is 28648199. The next prime is 28648237. The reversal of 28648204 is 40284682.

It is a self number, because there is not a number n which added to its sum of digits gives 28648204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20514 + ... + 21865.

Almost surely, 2^28648204 is an apocalyptic number.

It is an amenable number.

28648204 is a deficient number, since it is larger than the sum of its proper divisors (25640576).

28648204 is a wasteful number, since it uses less digits than its factorization.

28648204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42409 (or 42394 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 28648204 is about 5352.4017039083. The cubic root of 28648204 is about 305.9842929839.

The spelling of 28648204 in words is "twenty-eight million, six hundred forty-eight thousand, two hundred four".