204386 has 16 divisors (see below), whose sum is σ = 377664. Its totient is φ = 80784.

The previous prime is 204377. The next prime is 204397. The reversal of 204386 is 683402.

It is a happy number.

204386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380 + ... + 743.

It is an arithmetic number, because the mean of its divisors is an integer number (23604).

2²⁰⁴³⁸⁶ is an apocalyptic number.

204386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204386 is a deficient number, since it is larger than the sum of its proper divisors (173278).

204386 is a wasteful number, since it uses less digits than its factorization.

204386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145.

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

The square root of 204386 is about 452.0906988647. The cubic root of 204386 is about 58.9047587201.

Adding to 204386 its reverse (683402), we get a palindrome (887788).

The spelling of 204386 in words is "two hundred four thousand, three hundred eighty-six".