520297988 has 24 divisors (see below), whose sum is σ = 1101808512. Its totient is φ = 209867904.

The previous prime is 520297963. The next prime is 520298063. The reversal of 520297988 is 889792025.

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, 546056 + ... + 547007.

It is an arithmetic number, because the mean of its divisors is an integer number (45908688).

Almost surely, 2^520297988 is an apocalyptic number.

It is an amenable number.

520297988 is an abundant number, since it is smaller than the sum of its proper divisors (581510524).

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

520297988 is a wasteful number, since it uses less digits than its factorization.

520297988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093091 (or 1093089 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 520297988 is about 22810.0413853198. The cubic root of 520297988 is about 804.2987285430.

The spelling of 520297988 in words is "five hundred twenty million, two hundred ninety-seven thousand, nine hundred eighty-eight".