871563472 has 90 divisors (see below), whose sum is σ = 1922656022. Its totient is φ = 380447232.

The previous prime is 871563467. The next prime is 871563479. The reversal of 871563472 is 274365178.

It can be written as a sum of positive squares in 3 ways, for example, as 15649936 + 855913536 = 3956^2 + 29256^2 .

Its product of digits (282240) is a multiple of the sum of its prime factors (245).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871563479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9792804 + ... + 9792892.

Almost surely, 2^871563472 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 871563472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961328011).

871563472 is an abundant number, since it is smaller than the sum of its proper divisors (1051092550).

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

871563472 is a wasteful number, since it uses less digits than its factorization.

871563472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 127 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 871563472 is about 29522.2538434991. The cubic root of 871563472 is about 955.2117882306.

The spelling of 871563472 in words is "eight hundred seventy-one million, five hundred sixty-three thousand, four hundred seventy-two".