243204 has 24 divisors (see below), whose sum is σ = 611520. Its totient is φ = 74784.

The previous prime is 243203. The next prime is 243209. The reversal of 243204 is 402342.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (243203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624 + ... + 935.

It is an arithmetic number, because the mean of its divisors is an integer number (25480).

2²⁴³²⁰⁴ is an apocalyptic number.

It is an amenable number.

243204 is an abundant number, since it is smaller than the sum of its proper divisors (368316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243204 is a wasteful number, since it uses less digits than its factorization.

243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 243204 is about 493.1571757564. The cubic root of 243204 is about 62.4199722393.

Adding to 243204 its reverse (402342), we get a palindrome (645546).

The spelling of 243204 in words is "two hundred forty-three thousand, two hundred four", and thus it is an iban number.