520818 has 16 divisors (see below), whose sum is σ = 1059456. Its totient is φ = 170640.

The previous prime is 520813. The next prime is 520837. The reversal of 520818 is 818025.

It is not an unprimeable number, because it can be changed into a prime (520813) 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, 346 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (66216).

2⁵²⁰⁸¹⁸ is an apocalyptic number.

520818 is an abundant number, since it is smaller than the sum of its proper divisors (538638).

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

520818 is a wasteful number, since it uses less digits than its factorization.

520818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 520818 is about 721.6772131639. The cubic root of 520818 is about 80.4566591536.

The spelling of 520818 in words is "five hundred twenty thousand, eight hundred eighteen".