243243746 has 16 divisors (see below), whose sum is σ = 369230400. Its totient is φ = 120173328.

The previous prime is 243243739. The next prime is 243243751. The reversal of 243243746 is 647342342.

It is a super-2 number, since 2×243243746² = 118335039936225032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90011 + ... + 92673.

It is an arithmetic number, because the mean of its divisors is an integer number (23076900).

Almost surely, 2^243243746 is an apocalyptic number.

243243746 is a deficient number, since it is larger than the sum of its proper divisors (125986654).

243243746 is a wasteful number, since it uses less digits than its factorization.

243243746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193.

The product of its digits is 96768, while the sum is 35.

The square root of 243243746 is about 15596.2734651583. The cubic root of 243243746 is about 624.2337241514.

The spelling of 243243746 in words is "two hundred forty-three million, two hundred forty-three thousand, seven hundred forty-six".