12861028 has 6 divisors (see below), whose sum is σ = 22506806. Its totient is φ = 6430512.

The previous prime is 12860977. The next prime is 12861029. The reversal of 12861028 is 82016821.

It can be written as a sum of positive squares in only one way, i.e., 8988004 + 3873024 = 2998^2 + 1968^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12860987 and 12861005.

It is not an unprimeable number, because it can be changed into a prime (12861029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607625 + ... + 1607632.

Almost surely, 2^12861028 is an apocalyptic number.

It is an amenable number.

12861028 is a deficient number, since it is larger than the sum of its proper divisors (9645778).

12861028 is a wasteful number, since it uses less digits than its factorization.

12861028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215261 (or 3215259 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 12861028 is about 3586.2275443703. The cubic root of 12861028 is about 234.2925942712.

Adding to 12861028 its reverse (82016821), we get a palindrome (94877849).

The spelling of 12861028 in words is "twelve million, eight hundred sixty-one thousand, twenty-eight".