520641232 has 20 divisors (see below), whose sum is σ = 1009479040. Its totient is φ = 260130528.

The previous prime is 520641203. The next prime is 520641241. The reversal of 520641232 is 232146025.

It is a junction number, because it is equal to n+sod(n) for n = 520641197 and 520641206.

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, 12193 + ... + 34495.

It is an arithmetic number, because the mean of its divisors is an integer number (50473952).

Almost surely, 2^520641232 is an apocalyptic number.

It is an amenable number.

520641232 is a deficient number, since it is larger than the sum of its proper divisors (488837808).

520641232 is a wasteful number, since it uses less digits than its factorization.

520641232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23770 (or 23764 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 520641232 is about 22817.5641118854. The cubic root of 520641232 is about 804.4755567150.

Adding to 520641232 its reverse (232146025), we get a palindrome (752787257).

The spelling of 520641232 in words is "five hundred twenty million, six hundred forty-one thousand, two hundred thirty-two".