12327728 has 20 divisors (see below), whose sum is σ = 27297360. Its totient is φ = 5283264.

The previous prime is 12327709. The next prime is 12327743. The reversal of 12327728 is 82772321.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12327694 and 12327703.

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 3 ways as a sum of consecutive naturals, for example, 54923 + ... + 55146.

It is an arithmetic number, because the mean of its divisors is an integer number (1364868).

Almost surely, 2^12327728 is an apocalyptic number.

It is an amenable number.

12327728 is an abundant number, since it is smaller than the sum of its proper divisors (14969632).

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

12327728 is a wasteful number, since it uses less digits than its factorization.

12327728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110084 (or 110078 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 12327728 is about 3511.0864415448. The cubic root of 12327728 is about 231.0083516155.

The spelling of 12327728 in words is "twelve million, three hundred twenty-seven thousand, seven hundred twenty-eight".