871568490 has 96 divisors (see below), whose sum is σ = 2288407680. Its totient is φ = 212329728.

The previous prime is 871568483. The next prime is 871568521. The reversal of 871568490 is 94865178.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 521376 + ... + 523044.

It is an arithmetic number, because the mean of its divisors is an integer number (23837580).

Almost surely, 2^871568490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871568490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144203840).

871568490 is an abundant number, since it is smaller than the sum of its proper divisors (1416839190).

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

871568490 is a wasteful number, since it uses less digits than its factorization.

871568490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 871568490 is about 29522.3388301130. The cubic root of 871568490 is about 955.2136214280.

The spelling of 871568490 in words is "eight hundred seventy-one million, five hundred sixty-eight thousand, four hundred ninety".