243272928 has 48 divisors (see below), whose sum is σ = 655860240. Its totient is φ = 78898176.

The previous prime is 243272921. The next prime is 243272947. The reversal of 243272928 is 829272342.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243272921) 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, 30693 + ... + 37796.

It is an arithmetic number, because the mean of its divisors is an integer number (13663755).

Almost surely, 2^243272928 is an apocalyptic number.

It is an amenable number.

243272928 is an abundant number, since it is smaller than the sum of its proper divisors (412587312).

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

243272928 is a wasteful number, since it uses less digits than its factorization.

243272928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68539 (or 68531 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 243272928 is about 15597.2089810966. The cubic root of 243272928 is about 624.2586863007.

The spelling of 243272928 in words is "two hundred forty-three million, two hundred seventy-two thousand, nine hundred twenty-eight".