520351232 has 80 divisors (see below), whose sum is σ = 1110143232. Its totient is φ = 242810880.

The previous prime is 520351231. The next prime is 520351243. The reversal of 520351232 is 232153025.

It is a junction number, because it is equal to n+sod(n) for n = 520351198 and 520351207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520351231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1662308 + ... + 1662620.

Almost surely, 2^520351232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520351232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555071616).

520351232 is an abundant number, since it is smaller than the sum of its proper divisors (589792000).

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

520351232 is a wasteful number, since it uses less digits than its factorization.

520351232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 520351232 is about 22811.2084730292. The cubic root of 520351232 is about 804.3261632194.

The spelling of 520351232 in words is "five hundred twenty million, three hundred fifty-one thousand, two hundred thirty-two".