2871047 has 4 divisors (see below), whose sum is σ = 2874720. Its totient is φ = 2867376.

The previous prime is 2871031. The next prime is 2871049. The reversal of 2871047 is 7401782.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7401782 = 2 ⋅3700891.

It is a cyclic number.

It is not a de Polignac number, because 2871047 - 2⁴ = 2871031 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 (2871049) 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, 143 + ... + 2400.

It is an arithmetic number, because the mean of its divisors is an integer number (718680).

2^2871047 is an apocalyptic number.

2871047 is a deficient number, since it is larger than the sum of its proper divisors (3673).

2871047 is a wasteful number, since it uses less digits than its factorization.

2871047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 2871047 is about 1694.4164187118. The cubic root of 2871047 is about 142.1281492103.

The spelling of 2871047 in words is "two million, eight hundred seventy-one thousand, forty-seven".