204634 has 4 divisors (see below), whose sum is σ = 306954. Its totient is φ = 102316.

The previous prime is 204623. The next prime is 204641. The reversal of 204634 is 436402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 64009 = 375^2 + 253^2 .

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 as a sum of consecutive naturals, namely, 51157 + ... + 51160.

2²⁰⁴⁶³⁴ is an apocalyptic number.

204634 is a deficient number, since it is larger than the sum of its proper divisors (102320).

204634 is a wasteful number, since it uses less digits than its factorization.

204634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102319.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204634 is about 452.3648969582. The cubic root of 204634 is about 58.9285739123.

It can be divided in two parts, 2046 and 34, that added together give a triangular number (2080 = T₆₄).

The spelling of 204634 in words is "two hundred four thousand, six hundred thirty-four".