204628 has 6 divisors (see below), whose sum is σ = 358106. Its totient is φ = 102312.

The previous prime is 204623. The next prime is 204641. The reversal of 204628 is 826402.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 324 = 452^2 + 18^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204599 and 204608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575 + ... + 25582.

2²⁰⁴⁶²⁸ is an apocalyptic number.

It is an amenable number.

204628 is a deficient number, since it is larger than the sum of its proper divisors (153478).

204628 is a wasteful number, since it uses less digits than its factorization.

204628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51161 (or 51159 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 204628 is about 452.3582650953. The cubic root of 204628 is about 58.9279979655.

The spelling of 204628 in words is "two hundred four thousand, six hundred twenty-eight".