518340 has 48 divisors (see below), whose sum is σ = 1487808. Its totient is φ = 134784.

The previous prime is 518327. The next prime is 518341. The reversal of 518340 is 43815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518341) by changing a digit.

518340 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 15 ways as a sum of consecutive naturals, for example, 3099 + ... + 3261.

It is an arithmetic number, because the mean of its divisors is an integer number (30996).

2⁵¹⁸³⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743904).

518340 is an abundant number, since it is smaller than the sum of its proper divisors (969468).

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

518340 is a wasteful number, since it uses less digits than its factorization.

518340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 518340 is about 719.9583321276. The cubic root of 518340 is about 80.3288546637.

It can be divided in two parts, 518 and 340, that added together give a palindrome (858).

The spelling of 518340 in words is "five hundred eighteen thousand, three hundred forty".