520634838 has 16 divisors (see below), whose sum is σ = 1041633216. Its totient is φ = 173484360.

The previous prime is 520634791. The next prime is 520634893. The reversal of 520634838 is 838436025.

It is a junction number, because it is equal to n+sod(n) for n = 520634796 and 520634805.

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 7 ways as a sum of consecutive naturals, for example, 5673 + ... + 32763.

It is an arithmetic number, because the mean of its divisors is an integer number (65102076).

Almost surely, 2^520634838 is an apocalyptic number.

520634838 is an abundant number, since it is smaller than the sum of its proper divisors (520998378).

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

520634838 is a wasteful number, since it uses less digits than its factorization.

520634838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30299.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 520634838 is about 22817.4240000926. The cubic root of 520634838 is about 804.4722634442.

The spelling of 520634838 in words is "five hundred twenty million, six hundred thirty-four thousand, eight hundred thirty-eight".