243866316 has 12 divisors (see below), whose sum is σ = 569021432. Its totient is φ = 81288768.

The previous prime is 243866299. The next prime is 243866321. The reversal of 243866316 is 613668342.

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

It is an unprimeable number.

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, 10161085 + ... + 10161108.

Almost surely, 2^243866316 is an apocalyptic number.

It is an amenable number.

243866316 is an abundant number, since it is smaller than the sum of its proper divisors (325155116).

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

243866316 is a wasteful number, since it uses less digits than its factorization.

243866316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20322200 (or 20322198 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 243866316 is about 15616.2196449717. The cubic root of 243866316 is about 624.7658352646.

The spelling of 243866316 in words is "two hundred forty-three million, eight hundred sixty-six thousand, three hundred sixteen".