243453236 has 12 divisors (see below), whose sum is σ = 458815812. Its totient is φ = 112363008.

The previous prime is 243453211. The next prime is 243453239. The reversal of 243453236 is 632354342.

It can be written as a sum of positive squares in 2 ways, for example, as 50410000 + 193043236 = 7100^2 + 13894^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243453239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340845 + ... + 2340948.

It is an arithmetic number, because the mean of its divisors is an integer number (38234651).

Almost surely, 2^243453236 is an apocalyptic number.

243453236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

243453236 is a deficient number, since it is larger than the sum of its proper divisors (215362576).

243453236 is a wasteful number, since it uses less digits than its factorization.

243453236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681810 (or 4681808 counting only the distinct ones).

The product of its digits is 51840, while the sum is 32.

The square root of 243453236 is about 15602.9880471658. The cubic root of 243453236 is about 624.4128766840.

The spelling of 243453236 in words is "two hundred forty-three million, four hundred fifty-three thousand, two hundred thirty-six".