871895424 has 64 divisors (see below), whose sum is σ = 2321928000. Its totient is φ = 289884672.

The previous prime is 871895399. The next prime is 871895447. The reversal of 871895424 is 424598178.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158187 + ... + 163605.

It is an arithmetic number, because the mean of its divisors is an integer number (36280125).

Almost surely, 2^871895424 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 871895424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160964000).

871895424 is an abundant number, since it is smaller than the sum of its proper divisors (1450032576).

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

871895424 is a wasteful number, since it uses less digits than its factorization.

871895424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855 (or 5843 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 871895424 is about 29527.8753722648. The cubic root of 871895424 is about 955.3330432037. Note that the first 3 decimals are identical.

The spelling of 871895424 in words is "eight hundred seventy-one million, eight hundred ninety-five thousand, four hundred twenty-four".