12981768 has 16 divisors (see below), whose sum is σ = 32454480. Its totient is φ = 4327248.

The previous prime is 12981751. The next prime is 12981797. The reversal of 12981768 is 86718921.

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, 270430 + ... + 270477.

It is an arithmetic number, because the mean of its divisors is an integer number (2028405).

Almost surely, 2^12981768 is an apocalyptic number.

It is an amenable number.

12981768 is an abundant number, since it is smaller than the sum of its proper divisors (19472712).

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

12981768 is a wasteful number, since it uses less digits than its factorization.

12981768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540916 (or 540912 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 12981768 is about 3603.0220648783. The cubic root of 12981768 is about 235.0234954628.

The spelling of 12981768 in words is "twelve million, nine hundred eighty-one thousand, seven hundred sixty-eight".