12881644 has 6 divisors (see below), whose sum is σ = 22542884. Its totient is φ = 6440820.

The previous prime is 12881629. The next prime is 12881657. The reversal of 12881644 is 44618821.

12881644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610202 + ... + 1610209.

Almost surely, 2^12881644 is an apocalyptic number.

It is an amenable number.

12881644 is a deficient number, since it is larger than the sum of its proper divisors (9661240).

12881644 is a wasteful number, since it uses less digits than its factorization.

12881644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220415 (or 3220413 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 12881644 is about 3589.1007230224. The cubic root of 12881644 is about 234.4177163979.

The spelling of 12881644 in words is "twelve million, eight hundred eighty-one thousand, six hundred forty-four".