243268947 has 8 divisors (see below), whose sum is σ = 360398480. Its totient is φ = 162179280.

The previous prime is 243268939. The next prime is 243268981. The reversal of 243268947 is 749862342.

It is not a de Polignac number, because 243268947 - 2³ = 243268939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243268847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504954 + ... + 4505007.

It is an arithmetic number, because the mean of its divisors is an integer number (45049810).

Almost surely, 2^243268947 is an apocalyptic number.

243268947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

243268947 is a deficient number, since it is larger than the sum of its proper divisors (117129533).

243268947 is an equidigital number, since it uses as much as digits as its factorization.

243268947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009970 (or 9009964 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 243268947 is about 15597.0813615881. The cubic root of 243268947 is about 624.2552810891.

The spelling of 243268947 in words is "two hundred forty-three million, two hundred sixty-eight thousand, nine hundred forty-seven".