12881626 has 16 divisors (see below), whose sum is σ = 20480040. Its totient is φ = 6065920.

The previous prime is 12881599. The next prime is 12881629. The reversal of 12881626 is 62618821.

12881626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4844401 + 8037225 = 2201^2 + 2835^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12881591 and 12881600.

It is not an unprimeable number, because it can be changed into a prime (12881629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331 + ... + 5086.

Almost surely, 2^12881626 is an apocalyptic number.

12881626 is a deficient number, since it is larger than the sum of its proper divisors (7598414).

12881626 is a wasteful number, since it uses less digits than its factorization.

12881626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489.

The product of its digits is 9216, while the sum is 34.

The square root of 12881626 is about 3589.0982154296. The cubic root of 12881626 is about 234.4176072110.

The spelling of 12881626 in words is "twelve million, eight hundred eighty-one thousand, six hundred twenty-six".