871828 has 12 divisors (see below), whose sum is σ = 1615572. Its totient is φ = 410240.

The previous prime is 871823. The next prime is 871837. The reversal of 871828 is 828178.

871828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 544644 = 572^2 + 738^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 871793 and 871802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871823) by changing a digit.

871828 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 3 ways as a sum of consecutive naturals, for example, 6343 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (134631).

2⁸⁷¹⁸²⁸ is an apocalyptic number.

It is an amenable number.

871828 is a deficient number, since it is larger than the sum of its proper divisors (743744).

871828 is a wasteful number, since it uses less digits than its factorization.

871828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12842 (or 12840 counting only the distinct ones).

The product of its digits is 7168, while the sum is 34.

The square root of 871828 is about 933.7173019710. The cubic root of 871828 is about 95.5308417148.

The spelling of 871828 in words is "eight hundred seventy-one thousand, eight hundred twenty-eight".