243198236 has 24 divisors (see below), whose sum is σ = 434112000. Its totient is φ = 119178864.

The previous prime is 243198223. The next prime is 243198253. The reversal of 243198236 is 632891342.

It is a self number, because there is not a number n which added to its sum of digits gives 243198236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88085 + ... + 90803.

It is an arithmetic number, because the mean of its divisors is an integer number (18088000).

Almost surely, 2^243198236 is an apocalyptic number.

It is an amenable number.

243198236 is a deficient number, since it is larger than the sum of its proper divisors (190913764).

243198236 is a wasteful number, since it uses less digits than its factorization.

243198236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3159 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 243198236 is about 15594.8143945351. The cubic root of 243198236 is about 624.1947911207.

The spelling of 243198236 in words is "two hundred forty-three million, one hundred ninety-eight thousand, two hundred thirty-six".