243478 has 16 divisors (see below), whose sum is σ = 391680. Its totient is φ = 113256.

The previous prime is 243473. The next prime is 243479. The reversal of 243478 is 874342.

243478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243473) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3043 + ... + 3121.

It is an arithmetic number, because the mean of its divisors is an integer number (24480).

2²⁴³⁴⁷⁸ is an apocalyptic number.

243478 is a deficient number, since it is larger than the sum of its proper divisors (148202).

243478 is a wasteful number, since it uses less digits than its factorization.

243478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171.

The product of its digits is 5376, while the sum is 28.

The square root of 243478 is about 493.4348994548. The cubic root of 243478 is about 62.4434047671.

The spelling of 243478 in words is "two hundred forty-three thousand, four hundred seventy-eight".