12728208 has 40 divisors (see below), whose sum is σ = 33032608. Its totient is φ = 4223232.

The previous prime is 12728203. The next prime is 12728227. The reversal of 12728208 is 80282721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12728203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13116 + ... + 14052.

Almost surely, 2^12728208 is an apocalyptic number.

It is an amenable number.

12728208 is an abundant number, since it is smaller than the sum of its proper divisors (20304400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12728208 is a wasteful number, since it uses less digits than its factorization.

12728208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 12728208 is about 3567.6614189130. The cubic root of 12728208 is about 233.4832632780.

The spelling of 12728208 in words is "twelve million, seven hundred twenty-eight thousand, two hundred eight".