2871239 has 8 divisors (see below), whose sum is σ = 3358080. Its totient is φ = 2403576.

The previous prime is 2871233. The next prime is 2871257. The reversal of 2871239 is 9321782.

2871239 is nontrivially palindromic in base 9.

2871239 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 2871239 - 2⁸ = 2870983 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 (2871233) 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, 4469 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (419760).

2^2871239 is an apocalyptic number.

2871239 is a deficient number, since it is larger than the sum of its proper divisors (486841).

2871239 is an equidigital number, since it uses as much as digits as its factorization.

2871239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589.

The product of its digits is 6048, while the sum is 32.

The square root of 2871239 is about 1694.4730744394. The cubic root of 2871239 is about 142.1313173921.

The spelling of 2871239 in words is "two million, eight hundred seventy-one thousand, two hundred thirty-nine".