520436 has 12 divisors (see below), whose sum is σ = 1040928. Its totient is φ = 223032.

The previous prime is 520433. The next prime is 520447. The reversal of 520436 is 634025.

520436 is an admirable number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9266 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (86744).

2⁵²⁰⁴³⁶ is an apocalyptic number.

It is an amenable number.

520436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

520436 is a wasteful number, since it uses less digits than its factorization.

520436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18598 (or 18596 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 520436 is about 721.4125033571. The cubic root of 520436 is about 80.4369837193.

The spelling of 520436 in words is "five hundred twenty thousand, four hundred thirty-six".