13126638 has 32 divisors (see below), whose sum is σ = 30818304. Its totient is φ = 3648672.

The previous prime is 13126627. The next prime is 13126639. The reversal of 13126638 is 83662131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13126639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2670 + ... + 5777.

It is an arithmetic number, because the mean of its divisors is an integer number (963072).

Almost surely, 2^13126638 is an apocalyptic number.

13126638 is an abundant number, since it is smaller than the sum of its proper divisors (17691666).

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

13126638 is a wasteful number, since it uses less digits than its factorization.

13126638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496.

The product of its digits is 5184, while the sum is 30.

The square root of 13126638 is about 3623.0702449718. The cubic root of 13126638 is about 235.8945114111.

Adding to 13126638 its reverse (83662131), we get a palindrome (96788769).

The spelling of 13126638 in words is "thirteen million, one hundred twenty-six thousand, six hundred thirty-eight".