2871869 has 32 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 1944000.

The previous prime is 2871857. The next prime is 2871877. The reversal of 2871869 is 9681782.

It is a cyclic number.

It is not a de Polignac number, because 2871869 - 2⁴ = 2871853 is a prime.

It is a super-2 number, since 2×2871869² = 16495263106322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871469) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18944 + ... + 19094.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^2871869 is an apocalyptic number.

It is an amenable number.

2871869 is a deficient number, since it is larger than the sum of its proper divisors (1213891).

2871869 is a wasteful number, since it uses less digits than its factorization.

2871869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 48384, while the sum is 41.

The square root of 2871869 is about 1694.6589627415. The cubic root of 2871869 is about 142.1417119966.

The spelling of 2871869 in words is "two million, eight hundred seventy-one thousand, eight hundred sixty-nine".