243704 has 16 divisors (see below), whose sum is σ = 468720. Its totient is φ = 118720.

The previous prime is 243703. The next prime is 243707. The reversal of 243704 is 407342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2²⁴³⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

243704 is a deficient number, since it is larger than the sum of its proper divisors (225016).

243704 is a wasteful number, since it uses less digits than its factorization.

243704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 243704 is about 493.6638532443. The cubic root of 243704 is about 62.4627190999.

The spelling of 243704 in words is "two hundred forty-three thousand, seven hundred four", and thus it is an iban number.