243687244 has 12 divisors (see below), whose sum is σ = 428284584. Its totient is φ = 121320224.

The previous prime is 243687239. The next prime is 243687247. The reversal of 243687244 is 442786342.

It is a junction number, because it is equal to n+sod(n) for n = 243687197 and 243687206.

It is not an unprimeable number, because it can be changed into a prime (243687247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129802 + ... + 131665.

It is an arithmetic number, because the mean of its divisors is an integer number (35690382).

Almost surely, 2^243687244 is an apocalyptic number.

It is an amenable number.

243687244 is a deficient number, since it is larger than the sum of its proper divisors (184597340).

243687244 is a wasteful number, since it uses less digits than its factorization.

243687244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261704 (or 261702 counting only the distinct ones).

The product of its digits is 258048, while the sum is 40.

The square root of 243687244 is about 15610.4850661342. The cubic root of 243687244 is about 624.6128751445.

The spelling of 243687244 in words is "two hundred forty-three million, six hundred eighty-seven thousand, two hundred forty-four".