204403434 has 16 divisors (see below), whose sum is σ = 408948672. Its totient is φ = 68110848.

The previous prime is 204403421. The next prime is 204403439. The reversal of 204403434 is 434304402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (204403439) 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, 26547 + ... + 33369.

It is an arithmetic number, because the mean of its divisors is an integer number (25559292).

Almost surely, 2^204403434 is an apocalyptic number.

204403434 is an abundant number, since it is smaller than the sum of its proper divisors (204545238).

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

204403434 is a wasteful number, since it uses less digits than its factorization.

204403434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11821.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 204403434 is about 14296.9728963861. The cubic root of 204403434 is about 589.0643351907.

Adding to 204403434 its reverse (434304402), we get a palindrome (638707836).

The spelling of 204403434 in words is "two hundred four million, four hundred three thousand, four hundred thirty-four".