2871893 has 4 divisors (see below), whose sum is σ = 2911308. Its totient is φ = 2832480.

The previous prime is 2871881. The next prime is 2871901. The reversal of 2871893 is 3981782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 734449 + 2137444 = 857^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 2871893 - 2⁴ = 2871877 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 (2871833) 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, 19598 + ... + 19743.

It is an arithmetic number, because the mean of its divisors is an integer number (727827).

2^2871893 is an apocalyptic number.

It is an amenable number.

2871893 is a deficient number, since it is larger than the sum of its proper divisors (39415).

2871893 is an equidigital number, since it uses as much as digits as its factorization.

2871893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39414.

The product of its digits is 24192, while the sum is 38.

The square root of 2871893 is about 1694.6660437974. Note that the first 3 decimals coincide. The cubic root of 2871893 is about 142.1421079515.

The spelling of 2871893 in words is "two million, eight hundred seventy-one thousand, eight hundred ninety-three".