12728097 has 12 divisors (see below), whose sum is σ = 19066320. Its totient is φ = 8485236.

The previous prime is 12728083. The next prime is 12728113. The reversal of 12728097 is 79082721.

It is not a de Polignac number, because 12728097 - 2⁶ = 12728033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12728047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25947 + ... + 26432.

It is an arithmetic number, because the mean of its divisors is an integer number (1588860).

Almost surely, 2^12728097 is an apocalyptic number.

It is an amenable number.

12728097 is a deficient number, since it is larger than the sum of its proper divisors (6338223).

12728097 is an frugal number, since it uses more digits than its factorization.

12728097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52394 (or 52382 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 12728097 is about 3567.6458624701. The cubic root of 12728097 is about 233.4825845567.

It can be divided in two parts, 127 and 28097, that added together give a square (28224 = 168²).

The spelling of 12728097 in words is "twelve million, seven hundred twenty-eight thousand, ninety-seven".