543438 has 48 divisors (see below), whose sum is σ = 1422720. Its totient is φ = 146448.

The previous prime is 543427. The next prime is 543463. The reversal of 543438 is 834345.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543438.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2281 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (29640).

2⁵⁴³⁴³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711360).

543438 is an abundant number, since it is smaller than the sum of its proper divisors (879282).

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

543438 is a wasteful number, since it uses less digits than its factorization.

543438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 543438 is about 737.1824740185. The cubic root of 543438 is about 81.6049809532.

The spelling of 543438 in words is "five hundred forty-three thousand, four hundred thirty-eight".