204434520 has 64 divisors (see below), whose sum is σ = 649386720. Its totient is φ = 51308544.

The previous prime is 204434519. The next prime is 204434533. The reversal of 204434520 is 25434402.

204434520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48067 + ... + 52146.

Almost surely, 2^204434520 is an apocalyptic number.

204434520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204434520 is an abundant number, since it is smaller than the sum of its proper divisors (444952200).

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

204434520 is a wasteful number, since it uses less digits than its factorization.

204434520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100244 (or 100240 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 204434520 is about 14298.0600082669. The cubic root of 204434520 is about 589.0941956247.

Adding to 204434520 its reverse (25434402), we get a palindrome (229868922).

The spelling of 204434520 in words is "two hundred four million, four hundred thirty-four thousand, five hundred twenty".