12866868 has 36 divisors (see below), whose sum is σ = 37171680. Its totient is φ = 3676176.

The previous prime is 12866851. The next prime is 12866869. The reversal of 12866868 is 86866821.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25278 + ... + 25781.

Almost surely, 2^12866868 is an apocalyptic number.

12866868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12866868 is an abundant number, since it is smaller than the sum of its proper divisors (24304812).

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

12866868 is a wasteful number, since it uses less digits than its factorization.

12866868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51076 (or 51071 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 12866868 is about 3587.0416780406. The cubic root of 12866868 is about 234.3280518230.

The spelling of 12866868 in words is "twelve million, eight hundred sixty-six thousand, eight hundred sixty-eight".