891112 has 32 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 409024.

The previous prime is 891103. The next prime is 891133. The reversal of 891112 is 211198.

891112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

891112 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5253 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2⁸⁹¹¹¹² is an apocalyptic number.

It is an amenable number.

891112 is an abundant number, since it is smaller than the sum of its proper divisors (923288).

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

891112 is a wasteful number, since it uses less digits than its factorization.

891112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 221 counting only the distinct ones).

The product of its digits is 144, while the sum is 22.

The square root of 891112 is about 943.9872880500. The cubic root of 891112 is about 96.2300616484.

The spelling of 891112 in words is "eight hundred ninety-one thousand, one hundred twelve".