12912756 has 12 divisors (see below), whose sum is σ = 30129792. Its totient is φ = 4304248.

The previous prime is 12912719. The next prime is 12912769. The reversal of 12912756 is 65721921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538020 + ... + 538043.

It is an arithmetic number, because the mean of its divisors is an integer number (2510816).

Almost surely, 2^12912756 is an apocalyptic number.

It is an amenable number.

12912756 is an abundant number, since it is smaller than the sum of its proper divisors (17217036).

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

12912756 is a wasteful number, since it uses less digits than its factorization.

12912756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076070 (or 1076068 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 12912756 is about 3593.4323424826. The cubic root of 12912756 is about 234.6062880920.

The spelling of 12912756 in words is "twelve million, nine hundred twelve thousand, seven hundred fifty-six".