12956728 has 32 divisors (see below), whose sum is σ = 25752960. Its totient is φ = 6098400.

The previous prime is 12956701. The next prime is 12956731. The reversal of 12956728 is 82765921.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11803 + ... + 12853.

It is an arithmetic number, because the mean of its divisors is an integer number (804780).

Almost surely, 2^12956728 is an apocalyptic number.

It is an amenable number.

12956728 is a deficient number, since it is larger than the sum of its proper divisors (12796232).

12956728 is a wasteful number, since it uses less digits than its factorization.

12956728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1143 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 12956728 is about 3599.5455268686. The cubic root of 12956728 is about 234.8722891413.

The spelling of 12956728 in words is "twelve million, nine hundred fifty-six thousand, seven hundred twenty-eight".