11091688 has 16 divisors (see below), whose sum is σ = 21514500. Its totient is φ = 5354496.

The previous prime is 11091673. The next prime is 11091697. The reversal of 11091688 is 88619011.

It can be written as a sum of positive squares in 2 ways, for example, as 10355524 + 736164 = 3218^2 + 858^2 .

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 3 ways as a sum of consecutive naturals, for example, 23673 + ... + 24136.

Almost surely, 2^11091688 is an apocalyptic number.

It is an amenable number.

11091688 is a deficient number, since it is larger than the sum of its proper divisors (10422812).

11091688 is a wasteful number, since it uses less digits than its factorization.

11091688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47844 (or 47840 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 11091688 is about 3330.4185923094. The cubic root of 11091688 is about 223.0142161502.

The spelling of 11091688 in words is "eleven million, ninety-one thousand, six hundred eighty-eight".