243798 has 16 divisors (see below), whose sum is σ = 492480. Its totient is φ = 80456.

The previous prime is 243787. The next prime is 243799. The reversal of 243798 is 897342.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 243798.

It is not an unprimeable number, because it can be changed into a prime (243799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2²⁴³⁷⁹⁸ is an apocalyptic number.

243798 is an abundant number, since it is smaller than the sum of its proper divisors (248682).

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

243798 is a wasteful number, since it uses less digits than its factorization.

243798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its digits is 12096, while the sum is 33.

The square root of 243798 is about 493.7590505500. The cubic root of 243798 is about 62.4707489788.

The spelling of 243798 in words is "two hundred forty-three thousand, seven hundred ninety-eight".