520643080 has 32 divisors (see below), whose sum is σ = 1177597440. Its totient is φ = 207163840.

The previous prime is 520643063. The next prime is 520643087. The reversal of 520643080 is 80346025.

It is not an unprimeable number, because it can be changed into a prime (520643087) 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, 26434 + ... + 41713.

It is an arithmetic number, because the mean of its divisors is an integer number (36799920).

Almost surely, 2^520643080 is an apocalyptic number.

It is an amenable number.

520643080 is an abundant number, since it is smaller than the sum of its proper divisors (656954360).

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

520643080 is a wasteful number, since it uses less digits than its factorization.

520643080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68349 (or 68345 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 520643080 is about 22817.6046069696. The cubic root of 520643080 is about 804.4765085343.

The spelling of 520643080 in words is "five hundred twenty million, six hundred forty-three thousand, eighty".