243885738 has 16 divisors (see below), whose sum is σ = 488157120. Its totient is φ = 81230976.

The previous prime is 243885731. The next prime is 243885743. The reversal of 243885738 is 837588342.

243885738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243885731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 23322.

It is an arithmetic number, because the mean of its divisors is an integer number (30509820).

Almost surely, 2^243885738 is an apocalyptic number.

243885738 is an abundant number, since it is smaller than the sum of its proper divisors (244271382).

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

243885738 is a wasteful number, since it uses less digits than its factorization.

243885738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32141.

The product of its digits is 1290240, while the sum is 48.

The square root of 243885738 is about 15616.8414860368. The cubic root of 243885738 is about 624.7824206902.

The spelling of 243885738 in words is "two hundred forty-three million, eight hundred eighty-five thousand, seven hundred thirty-eight".