243847338 has 16 divisors (see below), whose sum is σ = 557365440. Its totient is φ = 69670656.

The previous prime is 243847321. The next prime is 243847339. The reversal of 243847338 is 833748342.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5805889 = 243847338 / (2 + 4 + 3 + 8 + 4 + 7 + 3 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 243847338.

It is not an unprimeable number, because it can be changed into a prime (243847339) 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, 2902903 + ... + 2902986.

It is an arithmetic number, because the mean of its divisors is an integer number (34835340).

Almost surely, 2^243847338 is an apocalyptic number.

243847338 is an abundant number, since it is smaller than the sum of its proper divisors (313518102).

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

243847338 is a wasteful number, since it uses less digits than its factorization.

243847338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805901.

The product of its digits is 387072, while the sum is 42.

The square root of 243847338 is about 15615.6119956920. The cubic root of 243847338 is about 624.7496281424.

The spelling of 243847338 in words is "two hundred forty-three million, eight hundred forty-seven thousand, three hundred thirty-eight".