243274636 has 12 divisors (see below), whose sum is σ = 464433480. Its totient is φ = 110579360.

The previous prime is 243274631. The next prime is 243274643. The reversal of 243274636 is 636472342.

It is a junction number, because it is equal to n+sod(n) for n = 243274595 and 243274604.

It is not an unprimeable number, because it can be changed into a prime (243274631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764441 + ... + 2764528.

It is an arithmetic number, because the mean of its divisors is an integer number (38702790).

Almost surely, 2^243274636 is an apocalyptic number.

It is an amenable number.

243274636 is a deficient number, since it is larger than the sum of its proper divisors (221158844).

243274636 is a wasteful number, since it uses less digits than its factorization.

243274636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528984 (or 5528982 counting only the distinct ones).

The product of its digits is 145152, while the sum is 37.

The square root of 243274636 is about 15597.2637343862. The cubic root of 243274636 is about 624.2601472542.

The spelling of 243274636 in words is "two hundred forty-three million, two hundred seventy-four thousand, six hundred thirty-six".