520870 has 24 divisors (see below), whose sum is σ = 1091664. Its totient is φ = 178416.

The previous prime is 520867. The next prime is 520889. The reversal of 520870 is 78025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (45486).

2⁵²⁰⁸⁷⁰ is an apocalyptic number.

520870 is an abundant number, since it is smaller than the sum of its proper divisors (570794).

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

520870 is a wasteful number, since it uses less digits than its factorization.

520870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 520870 is about 721.7132394518. The cubic root of 520870 is about 80.4593367410.

Adding to 520870 its reverse (78025), we get a palindrome (598895).

The spelling of 520870 in words is "five hundred twenty thousand, eight hundred seventy".