12881668 has 12 divisors (see below), whose sum is σ = 22657600. Its totient is φ = 6408072.

The previous prime is 12881663. The next prime is 12881669. The reversal of 12881668 is 86618821.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12881668.

It is not an unprimeable number, because it can be changed into a prime (12881663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7296 + ... + 8887.

Almost surely, 2^12881668 is an apocalyptic number.

It is an amenable number.

12881668 is a deficient number, since it is larger than the sum of its proper divisors (9775932).

12881668 is a wasteful number, since it uses less digits than its factorization.

12881668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16386 (or 16384 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 12881668 is about 3589.1040664768. The cubic root of 12881668 is about 234.4178619803.

It can be divided in two parts, 128 and 81668, that added together give a square (81796 = 286²).

The spelling of 12881668 in words is "twelve million, eight hundred eighty-one thousand, six hundred sixty-eight".