243728274 has 8 divisors (see below), whose sum is σ = 487456560. Its totient is φ = 81242756.

The previous prime is 243728249. The next prime is 243728281. The reversal of 243728274 is 472827342.

243728274 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

243728274 is an admirable 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, 20310684 + ... + 20310695.

It is an arithmetic number, because the mean of its divisors is an integer number (60932070).

Almost surely, 2^243728274 is an apocalyptic number.

243728274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243728274 is a wasteful number, since it uses less digits than its factorization.

243728274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40621384.

The product of its digits is 150528, while the sum is 39.

The square root of 243728274 is about 15611.7991916371. The cubic root of 243728274 is about 624.6479288574.

The spelling of 243728274 in words is "two hundred forty-three million, seven hundred twenty-eight thousand, two hundred seventy-four".