12026638 has 16 divisors (see below), whose sum is σ = 19748736. Its totient is φ = 5459040.

The previous prime is 12026603. The next prime is 12026647. The reversal of 12026638 is 83662021.

12026638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2206 + ... + 5377.

It is an arithmetic number, because the mean of its divisors is an integer number (1234296).

Almost surely, 2^12026638 is an apocalyptic number.

12026638 is a deficient number, since it is larger than the sum of its proper divisors (7722098).

12026638 is a wasteful number, since it uses less digits than its factorization.

12026638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12026638 is about 3467.9443478810. The cubic root of 12026638 is about 229.1121283036.

Adding to 12026638 its reverse (83662021), we get a palindrome (95688659).

The spelling of 12026638 in words is "twelve million, twenty-six thousand, six hundred thirty-eight".