871860672 has 112 divisors (see below), whose sum is σ = 2595168800. Its totient is φ = 290573568.

The previous prime is 871860629. The next prime is 871860679. The reversal of 871860672 is 276068178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871860679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136854 + ... + 143082.

It is an arithmetic number, because the mean of its divisors is an integer number (23171150).

Almost surely, 2^871860672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871860672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297584400).

871860672 is an abundant number, since it is smaller than the sum of its proper divisors (1723308128).

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

871860672 is an frugal number, since it uses more digits than its factorization.

871860672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262 (or 6234 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 871860672 is about 29527.2869055049. The cubic root of 871860672 is about 955.3203504831.

The spelling of 871860672 in words is "eight hundred seventy-one million, eight hundred sixty thousand, six hundred seventy-two".