204028 has 12 divisors (see below), whose sum is σ = 389592. Its totient is φ = 92720.

The previous prime is 204023. The next prime is 204047. The reversal of 204028 is 820402.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204023) by changing a digit.

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, 2275 + ... + 2362.

It is an arithmetic number, because the mean of its divisors is an integer number (32466).

2²⁰⁴⁰²⁸ is an apocalyptic number.

It is an amenable number.

204028 is a deficient number, since it is larger than the sum of its proper divisors (185564).

204028 is a wasteful number, since it uses less digits than its factorization.

204028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4652 (or 4650 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 204028 is about 451.6945870829. The cubic root of 204028 is about 58.8703463369.

It can be divided in two parts, 20402 and 8, that multiplied together give a square (163216 = 404²).

The spelling of 204028 in words is "two hundred four thousand, twenty-eight".