12861928 has 16 divisors (see below), whose sum is σ = 25534980. Its totient is φ = 6052608.

The previous prime is 12861889. The next prime is 12861949. The reversal of 12861928 is 82916821.

It can be written as a sum of positive squares in 2 ways, for example, as 10099684 + 2762244 = 3178^2 + 1662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47151 + ... + 47422.

Almost surely, 2^12861928 is an apocalyptic number.

It is an amenable number.

12861928 is a deficient number, since it is larger than the sum of its proper divisors (12673052).

12861928 is a wasteful number, since it uses less digits than its factorization.

12861928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94596 (or 94592 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 12861928 is about 3586.3530222219. The cubic root of 12861928 is about 234.2980593195.

The spelling of 12861928 in words is "twelve million, eight hundred sixty-one thousand, nine hundred twenty-eight".