12688022 has 16 divisors (see below), whose sum is σ = 19783440. Its totient is φ = 6095712.

The previous prime is 12687989. The next prime is 12688033. The reversal of 12688022 is 22088621.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 16028 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (1236465).

Almost surely, 2^12688022 is an apocalyptic number.

12688022 is a deficient number, since it is larger than the sum of its proper divisors (7095418).

12688022 is a wasteful number, since it uses less digits than its factorization.

12688022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 12688022 is about 3562.0249858753. The cubic root of 12688022 is about 233.2372833697.

The spelling of 12688022 in words is "twelve million, six hundred eighty-eight thousand, twenty-two".