204345218 has 16 divisors (see below), whose sum is σ = 382152384. Its totient is φ = 79614960.

The previous prime is 204345203. The next prime is 204345269. The reversal of 204345218 is 812543402.

It is a happy 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, 663305 + ... + 663612.

It is an arithmetic number, because the mean of its divisors is an integer number (23884524).

Almost surely, 2^204345218 is an apocalyptic number.

204345218 is a deficient number, since it is larger than the sum of its proper divisors (177807166).

204345218 is a wasteful number, since it uses less digits than its factorization.

204345218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326937.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 204345218 is about 14294.9367959428. The cubic root of 204345218 is about 589.0084062127.

It can be divided in two parts, 20434 and 5218, that added together give a palindrome (25652).

The spelling of 204345218 in words is "two hundred four million, three hundred forty-five thousand, two hundred eighteen".