520438 has 8 divisors (see below), whose sum is σ = 826632. Its totient is φ = 244896.

The previous prime is 520433. The next prime is 520447. The reversal of 520438 is 834025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7620 + ... + 7687.

It is an arithmetic number, because the mean of its divisors is an integer number (103329).

2⁵²⁰⁴³⁸ is an apocalyptic number.

520438 is a deficient number, since it is larger than the sum of its proper divisors (306194).

520438 is a wasteful number, since it uses less digits than its factorization.

520438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15326.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 520438 is about 721.4138895253. The cubic root of 520438 is about 80.4370867571.

The spelling of 520438 in words is "five hundred twenty thousand, four hundred thirty-eight".