12861916 has 6 divisors (see below), whose sum is σ = 22508360. Its totient is φ = 6430956.

The previous prime is 12861889. The next prime is 12861949. The reversal of 12861916 is 61916821.

12861916 is nontrivially palindromic in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607736 + ... + 1607743.

Almost surely, 2^12861916 is an apocalyptic number.

It is an amenable number.

12861916 is a deficient number, since it is larger than the sum of its proper divisors (9646444).

12861916 is a wasteful number, since it uses less digits than its factorization.

12861916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215483 (or 3215481 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 12861916 is about 3586.3513492127. The cubic root of 12861916 is about 234.2979864538.

The spelling of 12861916 in words is "twelve million, eight hundred sixty-one thousand, nine hundred sixteen".