520631880 has 64 divisors (see below), whose sum is σ = 1563926400. Its totient is φ = 138654720.

The previous prime is 520631873. The next prime is 520631941. The reversal of 520631880 is 88136025.

It is a happy 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, 107920 + ... + 112640.

It is an arithmetic number, because the mean of its divisors is an integer number (24436350).

Almost surely, 2^520631880 is an apocalyptic number.

It is an amenable number.

520631880 is an abundant number, since it is smaller than the sum of its proper divisors (1043294520).

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

520631880 is a wasteful number, since it uses less digits than its factorization.

520631880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5654 (or 5650 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 520631880 is about 22817.3591811147. The cubic root of 520631880 is about 804.4707398982.

The spelling of 520631880 in words is "five hundred twenty million, six hundred thirty-one thousand, eight hundred eighty".