11139636 has 24 divisors (see below), whose sum is σ = 27123264. Its totient is φ = 3551680.

The previous prime is 11139629. The next prime is 11139647. The reversal of 11139636 is 63693111.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19905 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (1130136).

Almost surely, 2^11139636 is an apocalyptic number.

It is an amenable number.

11139636 is an abundant number, since it is smaller than the sum of its proper divisors (15983628).

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

11139636 is a wasteful number, since it uses less digits than its factorization.

11139636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40391 (or 40389 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 11139636 is about 3337.6093240522. The cubic root of 11139636 is about 223.3351085228.

The spelling of 11139636 in words is "eleven million, one hundred thirty-nine thousand, six hundred thirty-six".