243248238 has 16 divisors (see below), whose sum is σ = 540551760. Its totient is φ = 81082728.

The previous prime is 243248237. The next prime is 243248261. The reversal of 243248238 is 832842342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243248231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252245 + ... + 2252352.

It is an arithmetic number, because the mean of its divisors is an integer number (33784485).

Almost surely, 2^243248238 is an apocalyptic number.

243248238 is an abundant number, since it is smaller than the sum of its proper divisors (297303522).

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

243248238 is a wasteful number, since it uses less digits than its factorization.

243248238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504608 (or 4504602 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 243248238 is about 15596.4174732533. The cubic root of 243248238 is about 624.2375667177.

The spelling of 243248238 in words is "two hundred forty-three million, two hundred forty-eight thousand, two hundred thirty-eight".