871346820 has 48 divisors (see below), whose sum is σ = 2443331520. Its totient is φ = 232020096.

The previous prime is 871346779. The next prime is 871346843. The reversal of 871346820 is 28643178.

It is a super-2 number, since 2×871346820² = 1518490561448224800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32299 + ... + 52781.

It is an arithmetic number, because the mean of its divisors is an integer number (50902740).

Almost surely, 2^871346820 is an apocalyptic number.

It is an amenable number.

871346820 is an abundant number, since it is smaller than the sum of its proper divisors (1571984700).

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

871346820 is a wasteful number, since it uses less digits than its factorization.

871346820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21204 (or 21202 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 871346820 is about 29518.5843156477. The cubic root of 871346820 is about 955.1326332786.

Adding to 871346820 its reverse (28643178), we get a palindrome (899989998).

The spelling of 871346820 in words is "eight hundred seventy-one million, three hundred forty-six thousand, eight hundred twenty".