2872871 has 4 divisors (see below), whose sum is σ = 2883744. Its totient is φ = 2862000.

The previous prime is 2872853. The next prime is 2872889. The reversal of 2872871 is 1782782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1782782 = 2 ⋅891391.

It is an interprime number because it is at equal distance from previous prime (2872853) and next prime (2872889).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2872811) 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 3 ways as a sum of consecutive naturals, for example, 5030 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (720936).

2^2872871 is an apocalyptic number.

2872871 is a deficient number, since it is larger than the sum of its proper divisors (10873).

2872871 is a wasteful number, since it uses less digits than its factorization.

2872871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10872.

The product of its digits is 12544, while the sum is 35.

The square root of 2872871 is about 1694.9545716626. The cubic root of 2872871 is about 142.1582412364.

The spelling of 2872871 in words is "two million, eight hundred seventy-two thousand, eight hundred seventy-one".