2871389 has 8 divisors (see below), whose sum is σ = 3022272. Its totient is φ = 2722720.

The previous prime is 2871367. The next prime is 2871391. The reversal of 2871389 is 9831782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2871389 - 2⁸ = 2871133 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 (2871359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537 + ... + 3489.

It is an arithmetic number, because the mean of its divisors is an integer number (377784).

2^2871389 is an apocalyptic number.

It is an amenable number.

2871389 is a deficient number, since it is larger than the sum of its proper divisors (150883).

2871389 is a wasteful number, since it uses less digits than its factorization.

2871389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

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

The square root of 2871389 is about 1694.5173354085. The cubic root of 2871389 is about 142.1337924358.

It can be divided in two parts, 28 and 71389, that added together give a palindrome (71417).

The spelling of 2871389 in words is "two million, eight hundred seventy-one thousand, three hundred eighty-nine".