12727228 has 12 divisors (see below), whose sum is σ = 22367520. Its totient is φ = 6336512.

The previous prime is 12727213. The next prime is 12727229. The reversal of 12727228 is 82272721.

12727228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12727228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12727229) 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, 5701 + ... + 7612.

It is an arithmetic number, because the mean of its divisors is an integer number (1863960).

Almost surely, 2^12727228 is an apocalyptic number.

It is an amenable number.

12727228 is a deficient number, since it is larger than the sum of its proper divisors (9640292).

12727228 is a wasteful number, since it uses less digits than its factorization.

12727228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556 (or 13554 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 12727228 is about 3567.5240713974. The cubic root of 12727228 is about 233.4772708275.

Adding to 12727228 its reverse (82272721), we get a palindrome (94999949).

The spelling of 12727228 in words is "twelve million, seven hundred twenty-seven thousand, two hundred twenty-eight".