520409912 has 32 divisors (see below), whose sum is σ = 1065711600. Its totient is φ = 236275200.

The previous prime is 520409881. The next prime is 520409957. The reversal of 520409912 is 219904025.

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, 85862 + ... + 91722.

Almost surely, 2^520409912 is an apocalyptic number.

It is an amenable number.

520409912 is an abundant number, since it is smaller than the sum of its proper divisors (545301688).

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

520409912 is a wasteful number, since it uses less digits than its factorization.

520409912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887 (or 6883 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 520409912 is about 22812.4946465747. The cubic root of 520409912 is about 804.3563966991.

The spelling of 520409912 in words is "five hundred twenty million, four hundred nine thousand, nine hundred twelve".