11191912 has 32 divisors (see below), whose sum is σ = 22860000. Its totient is φ = 5116608.

The previous prime is 11191907. The next prime is 11191913. The reversal of 11191912 is 21919111.

It is not an unprimeable number, because it can be changed into a prime (11191913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139 + ... + 5677.

It is an arithmetic number, because the mean of its divisors is an integer number (714375).

Almost surely, 2^11191912 is an apocalyptic number.

It is an amenable number.

11191912 is an abundant number, since it is smaller than the sum of its proper divisors (11668088).

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

11191912 is a wasteful number, since it uses less digits than its factorization.

11191912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2589 counting only the distinct ones).

The product of its digits is 162, while the sum is 25.

The square root of 11191912 is about 3345.4315117784. The cubic root of 11191912 is about 223.6839185650.

The spelling of 11191912 in words is "eleven million, one hundred ninety-one thousand, nine hundred twelve".