520432404 has 12 divisors (see below), whose sum is σ = 1214342304. Its totient is φ = 173477464.

The previous prime is 520432379. The next prime is 520432427. The reversal of 520432404 is 404234025.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21684672 + ... + 21684695.

It is an arithmetic number, because the mean of its divisors is an integer number (101195192).

Almost surely, 2^520432404 is an apocalyptic number.

It is an amenable number.

520432404 is an abundant number, since it is smaller than the sum of its proper divisors (693909900).

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

520432404 is a wasteful number, since it uses less digits than its factorization.

520432404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43369374 (or 43369372 counting only the distinct ones).

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

The square root of 520432404 is about 22812.9876167064. The cubic root of 520432404 is about 804.3679845666.

Adding to 520432404 its reverse (404234025), we get a palindrome (924666429).

The spelling of 520432404 in words is "five hundred twenty million, four hundred thirty-two thousand, four hundred four".