12728924 has 12 divisors (see below), whose sum is σ = 23989224. Its totient is φ = 5874864.

The previous prime is 12728923. The next prime is 12728927. The reversal of 12728924 is 42982721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728923) by changing a digit.

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, 122342 + ... + 122445.

It is an arithmetic number, because the mean of its divisors is an integer number (1999102).

Almost surely, 2^12728924 is an apocalyptic number.

It is an amenable number.

12728924 is a deficient number, since it is larger than the sum of its proper divisors (11260300).

12728924 is a wasteful number, since it uses less digits than its factorization.

12728924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244804 (or 244802 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 12728924 is about 3567.7617633469. The cubic root of 12728924 is about 233.4876412413.

The spelling of 12728924 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred twenty-four".