204728 has 16 divisors (see below), whose sum is σ = 388680. Its totient is φ = 101088.

The previous prime is 204719. The next prime is 204733. The reversal of 204728 is 827402.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204728.

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 3 ways as a sum of consecutive naturals, for example, 1175 + ... + 1337.

2²⁰⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

204728 is a deficient number, since it is larger than the sum of its proper divisors (183952).

204728 is a wasteful number, since it uses less digits than its factorization.

204728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 204728 is about 452.4687834536. The cubic root of 204728 is about 58.9375956095.

The spelling of 204728 in words is "two hundred four thousand, seven hundred twenty-eight".