871112 has 32 divisors (see below), whose sum is σ = 1879200. Its totient is φ = 374400.

The previous prime is 871103. The next prime is 871147. The reversal of 871112 is 211178.

It is a super-2 number, since 2×871112² = 1517672233088, which contains 22 as substring.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 871112.

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, 1412 + ... + 1932.

It is an arithmetic number, because the mean of its divisors is an integer number (58725).

2⁸⁷¹¹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939600).

871112 is an abundant number, since it is smaller than the sum of its proper divisors (1008088).

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

871112 is a wasteful number, since it uses less digits than its factorization.

871112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 553 counting only the distinct ones).

The product of its digits is 112, while the sum is 20.

The square root of 871112 is about 933.3338095237. Note that the first 3 decimals coincide. The cubic root of 871112 is about 95.5046825733.

The spelling of 871112 in words is "eight hundred seventy-one thousand, one hundred twelve".