871844 has 24 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 411840.

The previous prime is 871837. The next prime is 871867. The reversal of 871844 is 448178.

871844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×871844² = 1520223920672, which contains 22 as substring.

It is a plaindrome in base 13 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 871844.

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, 9752 + ... + 9840.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2⁸⁷¹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

871844 is a deficient number, since it is larger than the sum of its proper divisors (740956).

871844 is a wasteful number, since it uses less digits than its factorization.

871844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 201 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 871844 is about 933.7258698355. The cubic root of 871844 is about 95.5314261130.

The spelling of 871844 in words is "eight hundred seventy-one thousand, eight hundred forty-four".