520645232 has 20 divisors (see below), whose sum is σ = 1009451760. Its totient is φ = 260141568.

The previous prime is 520645133. The next prime is 520645259. The reversal of 520645232 is 232546025.

It is a junction number, because it is equal to n+sod(n) for n = 520645195 and 520645204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14144 + ... + 35232.

It is an arithmetic number, because the mean of its divisors is an integer number (50472588).

Almost surely, 2^520645232 is an apocalyptic number.

It is an amenable number.

520645232 is a deficient number, since it is larger than the sum of its proper divisors (488806528).

520645232 is a wasteful number, since it uses less digits than its factorization.

520645232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22640 (or 22634 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 520645232 is about 22817.6517634922. The cubic root of 520645232 is about 804.4776169271.

The spelling of 520645232 in words is "five hundred twenty million, six hundred forty-five thousand, two hundred thirty-two".