243992 has 16 divisors (see below), whose sum is σ = 522960. Its totient is φ = 104544.

The previous prime is 243989. The next prime is 244003. The reversal of 243992 is 299342.

243992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (32685).

2²⁴³⁹⁹² is an apocalyptic number.

It is an amenable number.

243992 is an abundant number, since it is smaller than the sum of its proper divisors (278968).

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

243992 is a wasteful number, since it uses less digits than its factorization.

243992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4366 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 243992 is about 493.9554635795. The cubic root of 243992 is about 62.4873147589.

The spelling of 243992 in words is "two hundred forty-three thousand, nine hundred ninety-two".