520430232 has 64 divisors (see below), whose sum is σ = 1534924800. Its totient is φ = 143896320.

The previous prime is 520430221. The next prime is 520430237. The reversal of 520430232 is 232034025.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 520430199 and 520430208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520430237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44757 + ... + 55172.

It is an arithmetic number, because the mean of its divisors is an integer number (23983200).

Almost surely, 2^520430232 is an apocalyptic number.

It is an amenable number.

520430232 is an abundant number, since it is smaller than the sum of its proper divisors (1014494568).

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

520430232 is a wasteful number, since it uses less digits than its factorization.

520430232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99976 (or 99972 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 520430232 is about 22812.9400121948. The cubic root of 520430232 is about 804.3668655678.

Adding to 520430232 its reverse (232034025), we get a palindrome (752464257).

The spelling of 520430232 in words is "five hundred twenty million, four hundred thirty thousand, two hundred thirty-two".