871988 has 24 divisors (see below), whose sum is σ = 1687560. Its totient is φ = 391680.

The previous prime is 871987. The next prime is 871993. The reversal of 871988 is 889178.

871988 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 4 ways, for example, as 21904 + 850084 = 148^2 + 922^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a plaindrome in base 14 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (70315).

2⁸⁷¹⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

871988 is a deficient number, since it is larger than the sum of its proper divisors (815572).

871988 is a wasteful number, since it uses less digits than its factorization.

871988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 465 counting only the distinct ones).

The product of its digits is 32256, while the sum is 41.

The square root of 871988 is about 933.8029770781. The cubic root of 871988 is about 95.5366853750.

The spelling of 871988 in words is "eight hundred seventy-one thousand, nine hundred eighty-eight".