871156 has 24 divisors (see below), whose sum is σ = 1792224. Its totient is φ = 365280.

The previous prime is 871147. The next prime is 871159. The reversal of 871156 is 651178.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (74676).

2⁸⁷¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

871156 is an abundant number, since it is smaller than the sum of its proper divisors (921068).

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

871156 is a wasteful number, since it uses less digits than its factorization.

871156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1549 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 871156 is about 933.3573806426. The cubic root of 871156 is about 95.5062905316.

The spelling of 871156 in words is "eight hundred seventy-one thousand, one hundred fifty-six".