12688044 has 24 divisors (see below), whose sum is σ = 29964480. Its totient is φ = 4178064.

The previous prime is 12688037. The next prime is 12688079. The reversal of 12688044 is 44088621.

It is a junction number, because it is equal to n+sod(n) for n = 12687996 and 12688014.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5374 + ... + 7365.

It is an arithmetic number, because the mean of its divisors is an integer number (1248520).

Almost surely, 2^12688044 is an apocalyptic number.

It is an amenable number.

12688044 is an abundant number, since it is smaller than the sum of its proper divisors (17276436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12688044 is a wasteful number, since it uses less digits than its factorization.

12688044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12829 (or 12827 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 12688044 is about 3562.0280740050. The cubic root of 12688044 is about 233.2374181744.

It can be divided in two parts, 12 and 688044, that multiplied together give a palindrome (8256528).

The spelling of 12688044 in words is "twelve million, six hundred eighty-eight thousand, forty-four".