871515268 has 24 divisors (see below), whose sum is σ = 1739088792. Its totient is φ = 378576384.

The previous prime is 871515257. The next prime is 871515283. The reversal of 871515268 is 862515178.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 852172864 = 4398^2 + 29192^2 .

It is a super-2 number, since 2×871515268² = 1519077724714223648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492055 + ... + 493822.

It is an arithmetic number, because the mean of its divisors is an integer number (72462033).

Almost surely, 2^871515268 is an apocalyptic number.

It is an amenable number.

871515268 is a deficient number, since it is larger than the sum of its proper divisors (867573524).

871515268 is a wasteful number, since it uses less digits than its factorization.

871515268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985911 (or 985909 counting only the distinct ones).

The product of its digits is 134400, while the sum is 43.

The square root of 871515268 is about 29521.4374311279. The cubic root of 871515268 is about 955.1941777794.

It can be divided in two parts, 8715152 and 68, that multiplied together give a square (592630336 = 24344²).

The spelling of 871515268 in words is "eight hundred seventy-one million, five hundred fifteen thousand, two hundred sixty-eight".