11126638 has 4 divisors (see below), whose sum is σ = 16689960. Its totient is φ = 5563318.

The previous prime is 11126629. The next prime is 11126657. The reversal of 11126638 is 83662111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2781658 + ... + 2781661.

It is an arithmetic number, because the mean of its divisors is an integer number (4172490).

Almost surely, 2^11126638 is an apocalyptic number.

11126638 is a deficient number, since it is larger than the sum of its proper divisors (5563322).

11126638 is an equidigital number, since it uses as much as digits as its factorization.

11126638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563321.

The product of its digits is 1728, while the sum is 28.

The square root of 11126638 is about 3335.6615535752. The cubic root of 11126638 is about 223.2482104250.

Adding to 11126638 its reverse (83662111), we get a palindrome (94788749).

It can be divided in two parts, 1112 and 6638, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 11126638 in words is "eleven million, one hundred twenty-six thousand, six hundred thirty-eight".