243594 has 32 divisors (see below), whose sum is σ = 584640. Its totient is φ = 74736.

The previous prime is 243589. The next prime is 243613. The reversal of 243594 is 495342.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243594.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529 + ... + 875.

It is an arithmetic number, because the mean of its divisors is an integer number (18270).

2²⁴³⁵⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292320).

243594 is an abundant number, since it is smaller than the sum of its proper divisors (341046).

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

243594 is a wasteful number, since it uses less digits than its factorization.

243594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 365 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 243594 is about 493.5524288260. The cubic root of 243594 is about 62.4533198107.

The spelling of 243594 in words is "two hundred forty-three thousand, five hundred ninety-four".