243328927 has 4 divisors (see below), whose sum is σ = 246409120. Its totient is φ = 240248736.

The previous prime is 243328919. The next prime is 243328933. The reversal of 243328927 is 729823342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243328927 - 2³ = 243328919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243328927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243328907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539978 + ... + 1540135.

It is an arithmetic number, because the mean of its divisors is an integer number (61602280).

Almost surely, 2^243328927 is an apocalyptic number.

243328927 is a deficient number, since it is larger than the sum of its proper divisors (3080193).

243328927 is an equidigital number, since it uses as much as digits as its factorization.

243328927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080192.

The product of its digits is 145152, while the sum is 40.

The square root of 243328927 is about 15599.0040387199. The cubic root of 243328927 is about 624.3065819989.

The spelling of 243328927 in words is "two hundred forty-three million, three hundred twenty-eight thousand, nine hundred twenty-seven".