520064140 has 24 divisors (see below), whose sum is σ = 1095705072. Its totient is φ = 207345600.

The previous prime is 520064107. The next prime is 520064141. The reversal of 520064140 is 41460025.

It is not an unprimeable number, because it can be changed into a prime (520064141) 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, 36211 + ... + 48490.

It is an arithmetic number, because the mean of its divisors is an integer number (45654378).

Almost surely, 2^520064140 is an apocalyptic number.

It is an amenable number.

520064140 is an abundant number, since it is smaller than the sum of its proper divisors (575640932).

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

520064140 is a wasteful number, since it uses less digits than its factorization.

520064140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85017 (or 85015 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 520064140 is about 22804.9148211520. The cubic root of 520064140 is about 804.1782130957.

The spelling of 520064140 in words is "five hundred twenty million, sixty-four thousand, one hundred forty".