871309516 has 48 divisors (see below), whose sum is σ = 1945278720. Its totient is φ = 331571520.

The previous prime is 871309513. The next prime is 871309567. The reversal of 871309516 is 615903178.

It is not an unprimeable number, because it can be changed into a prime (871309511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19651 + ... + 46138.

It is an arithmetic number, because the mean of its divisors is an integer number (40526640).

Almost surely, 2^871309516 is an apocalyptic number.

871309516 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

871309516 is an abundant number, since it is smaller than the sum of its proper divisors (1073969204).

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

871309516 is a wasteful number, since it uses less digits than its factorization.

871309516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65854 (or 65852 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 871309516 is about 29517.9524357636. The cubic root of 871309516 is about 955.1190027412.

The spelling of 871309516 in words is "eight hundred seventy-one million, three hundred nine thousand, five hundred sixteen".