243813928 has 32 divisors (see below), whose sum is σ = 483436800. Its totient is φ = 114956928.

The previous prime is 243813877. The next prime is 243813943. The reversal of 243813928 is 829318342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30300 + ... + 37492.

It is an arithmetic number, because the mean of its divisors is an integer number (15107400).

Almost surely, 2^243813928 is an apocalyptic number.

It is an amenable number.

243813928 is a deficient number, since it is larger than the sum of its proper divisors (239622872).

243813928 is a wasteful number, since it uses less digits than its factorization.

243813928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7441 (or 7437 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 243813928 is about 15614.5421962989. The cubic root of 243813928 is about 624.7210941169.

The spelling of 243813928 in words is "two hundred forty-three million, eight hundred thirteen thousand, nine hundred twenty-eight".