11128638 has 16 divisors (see below), whose sum is σ = 22859280. Its totient is φ = 3609216.

The previous prime is 11128627. The next prime is 11128643. The reversal of 11128638 is 83682111.

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, 24843 + ... + 25286.

It is an arithmetic number, because the mean of its divisors is an integer number (1428705).

Almost surely, 2^11128638 is an apocalyptic number.

11128638 is an abundant number, since it is smaller than the sum of its proper divisors (11730642).

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

11128638 is a wasteful number, since it uses less digits than its factorization.

11128638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50171.

The product of its digits is 2304, while the sum is 30.

The square root of 11128638 is about 3335.9613307111. The cubic root of 11128638 is about 223.2615858241.

The spelling of 11128638 in words is "eleven million, one hundred twenty-eight thousand, six hundred thirty-eight".