520423212 has 24 divisors (see below), whose sum is σ = 1256194800. Its totient is φ = 167492416.

The previous prime is 520423207. The next prime is 520423213. The reversal of 520423212 is 212324025.

It is not an unprimeable number, because it can be changed into a prime (520423213) 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, 747387 + ... + 748082.

It is an arithmetic number, because the mean of its divisors is an integer number (52341450).

Almost surely, 2^520423212 is an apocalyptic number.

It is an amenable number.

520423212 is an abundant number, since it is smaller than the sum of its proper divisors (735771588).

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

520423212 is a wasteful number, since it uses less digits than its factorization.

520423212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495505 (or 1495503 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 520423212 is about 22812.7861516300. The cubic root of 520423212 is about 804.3632488930.

Adding to 520423212 its reverse (212324025), we get a palindrome (732747237).

The spelling of 520423212 in words is "five hundred twenty million, four hundred twenty-three thousand, two hundred twelve".