520085680 has 40 divisors (see below), whose sum is σ = 1211976000. Its totient is φ = 207556608.

The previous prime is 520085669. The next prime is 520085693. The reversal of 520085680 is 86580025.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×520085680² = 540978229082124800, which contains 22 as substring.

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, 28681 + ... + 43159.

It is an arithmetic number, because the mean of its divisors is an integer number (30299400).

Almost surely, 2^520085680 is an apocalyptic number.

It is an amenable number.

520085680 is an abundant number, since it is smaller than the sum of its proper divisors (691890320).

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

520085680 is a wasteful number, since it uses less digits than its factorization.

520085680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14941 (or 14935 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 520085680 is about 22805.3870828802. The cubic root of 520085680 is about 804.1893154183.

The spelling of 520085680 in words is "five hundred twenty million, eighty-five thousand, six hundred eighty".