12801728 has 28 divisors (see below), whose sum is σ = 25523952. Its totient is φ = 6370560.

The previous prime is 12801703. The next prime is 12801751. The reversal of 12801728 is 82710821.

It is a self number, because there is not a number n which added to its sum of digits gives 12801728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19973 + ... + 20603.

Almost surely, 2^12801728 is an apocalyptic number.

It is an amenable number.

12801728 is a deficient number, since it is larger than the sum of its proper divisors (12722224).

12801728 is an equidigital number, since it uses as much as digits as its factorization.

12801728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 12801728 is about 3577.9502511913. The cubic root of 12801728 is about 233.9319450472.

The spelling of 12801728 in words is "twelve million, eight hundred one thousand, seven hundred twenty-eight".