871554894 has 128 divisors (see below), whose sum is σ = 2129068032. Its totient is φ = 232657920.

The previous prime is 871554883. The next prime is 871554941. The reversal of 871554894 is 498455178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8461647 + ... + 8461749.

It is an arithmetic number, because the mean of its divisors is an integer number (16633344).

Almost surely, 2^871554894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871554894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064534016).

871554894 is an abundant number, since it is smaller than the sum of its proper divisors (1257513138).

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

871554894 is a wasteful number, since it uses less digits than its factorization.

871554894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its digits is 1612800, while the sum is 51.

The square root of 871554894 is about 29522.1085629059. The cubic root of 871554894 is about 955.2086544624.

The spelling of 871554894 in words is "eight hundred seventy-one million, five hundred fifty-four thousand, eight hundred ninety-four".