11191872 has 56 divisors (see below), whose sum is σ = 30065472. Its totient is φ = 3673600.

The previous prime is 11191867. The next prime is 11191897. The reversal of 11191872 is 27819111.

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, 13222 + ... + 14042.

Almost surely, 2^11191872 is an apocalyptic number.

11191872 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 11191872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15032736).

11191872 is an abundant number, since it is smaller than the sum of its proper divisors (18873600).

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

11191872 is an equidigital number, since it uses as much as digits as its factorization.

11191872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 897 counting only the distinct ones).

The product of its digits is 1008, while the sum is 30.

The square root of 11191872 is about 3345.4255334710. The cubic root of 11191872 is about 223.6836520819.

The spelling of 11191872 in words is "eleven million, one hundred ninety-one thousand, eight hundred seventy-two".