520004424 has 32 divisors (see below), whose sum is σ = 1356534720. Its totient is φ = 165798336.

The previous prime is 520004413. The next prime is 520004431. The reversal of 520004424 is 424400025.

It is a self number, because there is not a number n which added to its sum of digits gives 520004424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470467 + ... + 471570.

It is an arithmetic number, because the mean of its divisors is an integer number (42391710).

Almost surely, 2^520004424 is an apocalyptic number.

It is an amenable number.

520004424 is an abundant number, since it is smaller than the sum of its proper divisors (836530296).

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

520004424 is a wasteful number, since it uses less digits than its factorization.

520004424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942069 (or 942065 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 520004424 is about 22803.6055043934. The cubic root of 520004424 is about 804.1474321845.

Adding to 520004424 its reverse (424400025), we get a palindrome (944404449).

The spelling of 520004424 in words is "five hundred twenty million, four thousand, four hundred twenty-four".