243243224 has 16 divisors (see below), whose sum is σ = 521235600. Its totient is φ = 104247072.

The previous prime is 243243223. The next prime is 243243229. The reversal of 243243224 is 422342342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243243193 and 243243202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243243223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171759 + ... + 2171870.

It is an arithmetic number, because the mean of its divisors is an integer number (32577225).

Almost surely, 2^243243224 is an apocalyptic number.

It is an amenable number.

243243224 is an abundant number, since it is smaller than the sum of its proper divisors (277992376).

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

243243224 is a wasteful number, since it uses less digits than its factorization.

243243224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343642 (or 4343638 counting only the distinct ones).

The product of its digits is 9216, while the sum is 26.

The square root of 243243224 is about 15596.2567303825. The cubic root of 243243224 is about 624.2332776168.

Adding to 243243224 its reverse (422342342), we get a palindrome (665585566).

The spelling of 243243224 in words is "two hundred forty-three million, two hundred forty-three thousand, two hundred twenty-four".