871530372 has 54 divisors (see below), whose sum is σ = 2236821678. Its totient is φ = 286121088.

The previous prime is 871530371. The next prime is 871530377. The reversal of 871530372 is 273035178.

It can be written as a sum of positive squares in only one way, i.e., 861187716 + 10342656 = 29346^2 + 3216^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (871530371) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 158908 + ... + 164300.

Almost surely, 2^871530372 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 871530372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118410839).

871530372 is an abundant number, since it is smaller than the sum of its proper divisors (1365291306).

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

871530372 is a wasteful number, since it uses less digits than its factorization.

871530372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5465 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 871530372 is about 29521.6932441213. The cubic root of 871530372 is about 955.1996958199.

The spelling of 871530372 in words is "eight hundred seventy-one million, five hundred thirty thousand, three hundred seventy-two".