520868812 has 12 divisors (see below), whose sum is σ = 959495320. Its totient is φ = 246727296.

The previous prime is 520868809. The next prime is 520868857. The reversal of 520868812 is 218868025.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3426693 + ... + 3426844.

Almost surely, 2^520868812 is an apocalyptic number.

It is an amenable number.

520868812 is a deficient number, since it is larger than the sum of its proper divisors (438626508).

520868812 is a wasteful number, since it uses less digits than its factorization.

520868812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853560 (or 6853558 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 520868812 is about 22822.5505147869. The cubic root of 520868812 is about 804.5927557038.

The spelling of 520868812 in words is "five hundred twenty million, eight hundred sixty-eight thousand, eight hundred twelve".