520243430 has 32 divisors (see below), whose sum is σ = 1071192384. Its totient is φ = 178206336.

The previous prime is 520243429. The next prime is 520243459. The reversal of 520243430 is 34342025.

It is a junction number, because it is equal to n+sod(n) for n = 520243396 and 520243405.

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 15 ways as a sum of consecutive naturals, for example, 93404 + ... + 98816.

It is an arithmetic number, because the mean of its divisors is an integer number (33474762).

Almost surely, 2^520243430 is an apocalyptic number.

520243430 is an abundant number, since it is smaller than the sum of its proper divisors (550948954).

520243430 is a wasteful number, since it uses less digits than its factorization.

520243430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 520243430 is about 22808.8454332963. The cubic root of 520243430 is about 804.2706148691.

Adding to 520243430 its reverse (34342025), we get a palindrome (554585455).

The spelling of 520243430 in words is "five hundred twenty million, two hundred forty-three thousand, four hundred thirty".