243055388 has 12 divisors (see below), whose sum is σ = 425615232. Its totient is φ = 121451040.

The previous prime is 243055367. The next prime is 243055411. The reversal of 243055388 is 883550342.

It is a congruent number.

It is an unprimeable number.

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, 11708 + ... + 24963.

It is an arithmetic number, because the mean of its divisors is an integer number (35467936).

Almost surely, 2^243055388 is an apocalyptic number.

It is an amenable number.

243055388 is a deficient number, since it is larger than the sum of its proper divisors (182559844).

243055388 is a wasteful number, since it uses less digits than its factorization.

243055388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38332 (or 38330 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 243055388 is about 15590.2337378245. The cubic root of 243055388 is about 624.0725555289.

The spelling of 243055388 in words is "two hundred forty-three million, fifty-five thousand, three hundred eighty-eight".