520734 has 16 divisors (see below), whose sum is σ = 1059840. Its totient is φ = 170520.

The previous prime is 520721. The next prime is 520747. The reversal of 520734 is 437025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520721) and next prime (520747).

It is a self number, because there is not a number n which added to its sum of digits gives 520734.

It is a congruent number.

It is an unprimeable number.

520734 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (66240).

2⁵²⁰⁷³⁴ is an apocalyptic number.

520734 is an abundant number, since it is smaller than the sum of its proper divisors (539106).

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

520734 is a wasteful number, since it uses less digits than its factorization.

520734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 520734 is about 721.6190130533. The cubic root of 520734 is about 80.4523334437.

Adding to 520734 its reverse (437025), we get a palindrome (957759).

The spelling of 520734 in words is "five hundred twenty thousand, seven hundred thirty-four".