520323906 has 16 divisors (see below), whose sum is σ = 1040949504. Its totient is φ = 173391024.

The previous prime is 520323901. The next prime is 520323977. The reversal of 520323906 is 609323025.

It is not an unprimeable number, because it can be changed into a prime (520323901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14256 + ... + 35268.

It is an arithmetic number, because the mean of its divisors is an integer number (65059344).

Almost surely, 2^520323906 is an apocalyptic number.

520323906 is an abundant number, since it is smaller than the sum of its proper divisors (520625598).

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

520323906 is a wasteful number, since it uses less digits than its factorization.

520323906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25145.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 520323906 is about 22810.6095052280. The cubic root of 520323906 is about 804.3120833696.

The spelling of 520323906 in words is "five hundred twenty million, three hundred twenty-three thousand, nine hundred six".