204836 has 12 divisors (see below), whose sum is σ = 367500. Its totient is φ = 99840.

The previous prime is 204821. The next prime is 204857. The reversal of 204836 is 638402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 164836 = 200^2 + 406^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (30625).

2²⁰⁴⁸³⁶ is an apocalyptic number.

It is an amenable number.

204836 is a deficient number, since it is larger than the sum of its proper divisors (162664).

204836 is a wasteful number, since it uses less digits than its factorization.

204836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 204836 is about 452.5881129681. The cubic root of 204836 is about 58.9479575554.

The spelling of 204836 in words is "two hundred four thousand, eight hundred thirty-six".