520931992 has 32 divisors (see below), whose sum is σ = 1121598720. Its totient is φ = 222193440.

The previous prime is 520931989. The next prime is 520931993. The reversal of 520931992 is 299139025.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520931993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10228 + ... + 33859.

It is an arithmetic number, because the mean of its divisors is an integer number (35049960).

Almost surely, 2^520931992 is an apocalyptic number.

It is an amenable number.

520931992 is an abundant number, since it is smaller than the sum of its proper divisors (600666728).

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

520931992 is a wasteful number, since it uses less digits than its factorization.

520931992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44311 (or 44307 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 520931992 is about 22823.9346301202. The cubic root of 520931992 is about 804.6252860415.

The spelling of 520931992 in words is "five hundred twenty million, nine hundred thirty-one thousand, nine hundred ninety-two".