11091912 has 64 divisors (see below), whose sum is σ = 30334080. Its totient is φ = 3359232.

The previous prime is 11091907. The next prime is 11091919. The reversal of 11091912 is 21919011.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (11091919) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22533 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (473970).

Almost surely, 2^11091912 is an apocalyptic number.

11091912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11091912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15167040).

11091912 is an abundant number, since it is smaller than the sum of its proper divisors (19242168).

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

11091912 is a wasteful number, since it uses less digits than its factorization.

11091912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 11091912 is about 3330.4522215459. The cubic root of 11091912 is about 223.0157174199.

The spelling of 11091912 in words is "eleven million, ninety-one thousand, nine hundred twelve".