871851880 has 64 divisors (see below), whose sum is σ = 2052449280. Its totient is φ = 332966400.

The previous prime is 871851859. The next prime is 871851887. The reversal of 871851880 is 88158178.

It is a self number, because there is not a number n which added to its sum of digits gives 871851880.

It is not an unprimeable number, because it can be changed into a prime (871851887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71425 + ... + 82735.

It is an arithmetic number, because the mean of its divisors is an integer number (32069520).

Almost surely, 2^871851880 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 871851880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026224640).

871851880 is an abundant number, since it is smaller than the sum of its proper divisors (1180597400).

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

871851880 is a wasteful number, since it uses less digits than its factorization.

871851880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11410 (or 11406 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 46.

The square root of 871851880 is about 29527.1380258907. The cubic root of 871851880 is about 955.3171392649.

The spelling of 871851880 in words is "eight hundred seventy-one million, eight hundred fifty-one thousand, eight hundred eighty".