243738 has 24 divisors (see below), whose sum is σ = 576576. Its totient is φ = 73800.

The previous prime is 243709. The next prime is 243769. The reversal of 243738 is 837342.

243738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243738.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (24024).

2²⁴³⁷³⁸ is an apocalyptic number.

243738 is an abundant number, since it is smaller than the sum of its proper divisors (332838).

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

243738 is a wasteful number, since it uses less digits than its factorization.

243738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1247 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 243738 is about 493.6982884313. The cubic root of 243738 is about 62.4656237625.

The spelling of 243738 in words is "two hundred forty-three thousand, seven hundred thirty-eight".