12728536 has 16 divisors (see below), whose sum is σ = 23909400. Its totient is φ = 6352704.

The previous prime is 12728519. The next prime is 12728539. The reversal of 12728536 is 63582721.

It is a happy number.

It is a pancake number, because a pancake can be divided into 12728536 parts by 5045 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4836 + ... + 6988.

Almost surely, 2^12728536 is an apocalyptic number.

It is an amenable number.

12728536 is a deficient number, since it is larger than the sum of its proper divisors (11180864).

12728536 is a wasteful number, since it uses less digits than its factorization.

12728536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898 (or 2894 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 12728536 is about 3567.7073871045. The cubic root of 12728536 is about 233.4852688458.

The spelling of 12728536 in words is "twelve million, seven hundred twenty-eight thousand, five hundred thirty-six".