243774 has 24 divisors (see below), whose sum is σ = 547560. Its totient is φ = 78288.

The previous prime is 243769. The next prime is 243781. The reversal of 243774 is 477342.

It is an Ulam 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 243774.

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 11 ways as a sum of consecutive naturals, for example, 289 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (22815).

2²⁴³⁷⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273780).

243774 is an abundant number, since it is smaller than the sum of its proper divisors (303786).

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

243774 is a wasteful number, since it uses less digits than its factorization.

243774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 501 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 243774 is about 493.7347465998. The cubic root of 243774 is about 62.4686989932.

The spelling of 243774 in words is "two hundred forty-three thousand, seven hundred seventy-four", and thus it is an iban number.