520530304 has 64 divisors (see below), whose sum is σ = 1188381600. Its totient is φ = 222474240.

The previous prime is 520530281. The next prime is 520530317. The reversal of 520530304 is 403035025.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509314 + ... + 510334.

Almost surely, 2^520530304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520530304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594190800).

520530304 is an abundant number, since it is smaller than the sum of its proper divisors (667851296).

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

520530304 is a wasteful number, since it uses less digits than its factorization.

520530304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 520530304 is about 22815.1332233673. The cubic root of 520530304 is about 804.4184187106.

Adding to 520530304 its reverse (403035025), we get a palindrome (923565329).

The spelling of 520530304 in words is "five hundred twenty million, five hundred thirty thousand, three hundred four".