871002 has 48 divisors (see below), whose sum is σ = 2122848. Its totient is φ = 255840.

The previous prime is 871001. The next prime is 871021. The reversal of 871002 is 200178.

871002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (871001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10453 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁸⁷¹⁰⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061424).

871002 is an abundant number, since it is smaller than the sum of its proper divisors (1251846).

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

871002 is a wasteful number, since it uses less digits than its factorization.

871002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 871002 is about 933.2748791219. The cubic root of 871002 is about 95.5006624407.

It can be divided in two parts, 87 and 1002, that added together give a square (1089 = 33²).

The spelling of 871002 in words is "eight hundred seventy-one thousand, two".