520838538 has 16 divisors (see below), whose sum is σ = 1136375136. Its totient is φ = 157829840.

The previous prime is 520838509. The next prime is 520838543. The reversal of 520838538 is 835838025.

It is a self number, because there is not a number n which added to its sum of digits gives 520838538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3945681 + ... + 3945812.

It is an arithmetic number, because the mean of its divisors is an integer number (71023446).

Almost surely, 2^520838538 is an apocalyptic number.

520838538 is an abundant number, since it is smaller than the sum of its proper divisors (615536598).

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

520838538 is a wasteful number, since it uses less digits than its factorization.

520838538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7891509.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 520838538 is about 22821.8872576306. The cubic root of 520838538 is about 804.5771671893.

The spelling of 520838538 in words is "five hundred twenty million, eight hundred thirty-eight thousand, five hundred thirty-eight".