12789728 has 24 divisors (see below), whose sum is σ = 28777392. Its totient is φ = 5481216.

The previous prime is 12789709. The next prime is 12789737. The reversal of 12789728 is 82798721.

It is a congruent number.

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, 28325 + ... + 28772.

It is an arithmetic number, because the mean of its divisors is an integer number (1199058).

Almost surely, 2^12789728 is an apocalyptic number.

It is an amenable number.

12789728 is an abundant number, since it is smaller than the sum of its proper divisors (15987664).

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

12789728 is an equidigital number, since it uses as much as digits as its factorization.

12789728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57114 (or 57106 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 12789728 is about 3576.2729202341. The cubic root of 12789728 is about 233.8588283314.

The spelling of 12789728 in words is "twelve million, seven hundred eighty-nine thousand, seven hundred twenty-eight".