520656132 has 12 divisors (see below), whose sum is σ = 1214864336. Its totient is φ = 173552040.

The previous prime is 520656113. The next prime is 520656137. The reversal of 520656132 is 231656025.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 520656132.

It is not an unprimeable number, because it can be changed into a prime (520656137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21693994 + ... + 21694017.

Almost surely, 2^520656132 is an apocalyptic number.

It is an amenable number.

520656132 is an abundant number, since it is smaller than the sum of its proper divisors (694208204).

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

520656132 is a wasteful number, since it uses less digits than its factorization.

520656132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43388018 (or 43388016 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 520656132 is about 22817.8906124120. The cubic root of 520656132 is about 804.4832309513.

The spelling of 520656132 in words is "five hundred twenty million, six hundred fifty-six thousand, one hundred thirty-two".