518432 has 24 divisors (see below), whose sum is σ = 1081836. Its totient is φ = 243712.

The previous prime is 518431. The next prime is 518447. The reversal of 518432 is 234815.

518432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 512656 + 5776 = 716^2 + 76^2 .

It is a junction number, because it is equal to n+sod(n) for n = 518398 and 518407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518431) 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, 68 + ... + 1020.

2⁵¹⁸⁴³² 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 518432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540918).

518432 is an abundant number, since it is smaller than the sum of its proper divisors (563404).

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

518432 is a wasteful number, since it uses less digits than its factorization.

518432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 972 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 518432 is about 720.0222218793. The cubic root of 518432 is about 80.3336068967. Note that the first 3 decimals are identical.

The spelling of 518432 in words is "five hundred eighteen thousand, four hundred thirty-two".