243996 has 12 divisors (see below), whose sum is σ = 569352. Its totient is φ = 81328.

The previous prime is 243989. The next prime is 244003. The reversal of 243996 is 699342.

It is an interprime number because it is at equal distance from previous prime (243989) and next prime (244003).

It is a tau number, because it is divible by the number of its divisors (12).

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 243996.

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, 10155 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (47446).

2²⁴³⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

243996 is an abundant number, since it is smaller than the sum of its proper divisors (325356).

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

243996 is a wasteful number, since it uses less digits than its factorization.

243996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340 (or 20338 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 243996 is about 493.9595125109. The cubic root of 243996 is about 62.4876562289.

The spelling of 243996 in words is "two hundred forty-three thousand, nine hundred ninety-six".