243673872 has 40 divisors (see below), whose sum is σ = 677914944. Its totient is φ = 74976384.

The previous prime is 243673861. The next prime is 243673873. The reversal of 243673872 is 278376342.

It is not an unprimeable number, because it can be changed into a prime (243673873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194628 + ... + 195875.

Almost surely, 2^243673872 is an apocalyptic number.

It is an amenable number.

243673872 is an abundant number, since it is smaller than the sum of its proper divisors (434241072).

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

243673872 is a wasteful number, since it uses less digits than its factorization.

243673872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390527 (or 390521 counting only the distinct ones).

The product of its digits is 338688, while the sum is 42.

The square root of 243673872 is about 15610.0567583850. The cubic root of 243673872 is about 624.6014500133.

The spelling of 243673872 in words is "two hundred forty-three million, six hundred seventy-three thousand, eight hundred seventy-two".