243447056 has 20 divisors (see below), whose sum is σ = 472922112. Its totient is φ = 121402656.

The previous prime is 243447049. The next prime is 243447059. The reversal of 243447056 is 650744342.

It is not an unprimeable number, because it can be changed into a prime (243447059) 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 3 ways as a sum of consecutive naturals, for example, 13736 + ... + 25991.

Almost surely, 2^243447056 is an apocalyptic number.

It is an amenable number.

243447056 is a deficient number, since it is larger than the sum of its proper divisors (229475056).

243447056 is a wasteful number, since it uses less digits than its factorization.

243447056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40118 (or 40112 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 243447056 is about 15602.7900069186. The cubic root of 243447056 is about 624.4075931173.

The spelling of 243447056 in words is "two hundred forty-three million, four hundred forty-seven thousand, fifty-six".