204405250 has 32 divisors (see below), whose sum is σ = 437314176. Its totient is φ = 70081200.

The previous prime is 204405247. The next prime is 204405269. The reversal of 204405250 is 52504402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56652 + ... + 60151.

It is an arithmetic number, because the mean of its divisors is an integer number (13666068).

Almost surely, 2^204405250 is an apocalyptic number.

204405250 is an abundant number, since it is smaller than the sum of its proper divisors (232908926).

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

204405250 is a wasteful number, since it uses less digits than its factorization.

204405250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116827 (or 116817 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 204405250 is about 14297.0364061927. The cubic root of 204405250 is about 589.0660796781.

Adding to 204405250 its reverse (52504402), we get a palindrome (256909652).

The spelling of 204405250 in words is "two hundred four million, four hundred five thousand, two hundred fifty".