2002871 has 4 divisors (see below), whose sum is σ = 2156952. Its totient is φ = 1848792.

The previous prime is 2002867. The next prime is 2002877. The reversal of 2002871 is 1782002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1782002 = 2 ⋅891001.

It is a cyclic number.

It is not a de Polignac number, because 2002871 - 2² = 2002867 is a prime.

It is a super-2 number, since 2×2002871² = 8022984485282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77021 + ... + 77046.

It is an arithmetic number, because the mean of its divisors is an integer number (539238).

2^2002871 is an apocalyptic number.

2002871 is a deficient number, since it is larger than the sum of its proper divisors (154081).

2002871 is a wasteful number, since it uses less digits than its factorization.

2002871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154080.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2002871 is about 1415.2282501420. The cubic root of 2002871 is about 126.0523633873.

Adding to 2002871 its reverse (1782002), we get a palindrome (3784873).

The spelling of 2002871 in words is "two million, two thousand, eight hundred seventy-one".