12728974 has 8 divisors (see below), whose sum is σ = 20098440. Its totient is φ = 6029496.

The previous prime is 12728939. The next prime is 12728977. The reversal of 12728974 is 47982721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728977) 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, 167449 + ... + 167524.

It is an arithmetic number, because the mean of its divisors is an integer number (2512305).

Almost surely, 2^12728974 is an apocalyptic number.

12728974 is a deficient number, since it is larger than the sum of its proper divisors (7369466).

12728974 is a wasteful number, since it uses less digits than its factorization.

12728974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334994.

The product of its digits is 56448, while the sum is 40.

The square root of 12728974 is about 3567.7687705343. The cubic root of 12728974 is about 233.4879469589.

The spelling of 12728974 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred seventy-four".