12669426 has 96 divisors (see below), whose sum is σ = 35495040. Its totient is φ = 3278880.

The previous prime is 12669413. The next prime is 12669427. The reversal of 12669426 is 62496621.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12669427) 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 in 47 ways as a sum of consecutive naturals, for example, 45600 + ... + 45876.

It is an arithmetic number, because the mean of its divisors is an integer number (369740).

Almost surely, 2^12669426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12669426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17747520).

12669426 is an abundant number, since it is smaller than the sum of its proper divisors (22825614).

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

12669426 is a wasteful number, since it uses less digits than its factorization.

12669426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 300 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12669426 is about 3559.4137157684. The cubic root of 12669426 is about 233.1232808034.

The spelling of 12669426 in words is "twelve million, six hundred sixty-nine thousand, four hundred twenty-six".