2871804 has 48 divisors (see below), whose sum is σ = 7408800. Its totient is φ = 860160.

The previous prime is 2871797. The next prime is 2871811. The reversal of 2871804 is 4081782.

It is an interprime number because it is at equal distance from previous prime (2871797) and next prime (2871811).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6172 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (154350).

2^2871804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2871804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3704400).

2871804 is an abundant number, since it is smaller than the sum of its proper divisors (4536996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2871804 is a wasteful number, since it uses less digits than its factorization.

2871804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2871804 is about 1694.6397847330. The cubic root of 2871804 is about 142.1406396077.

The spelling of 2871804 in words is "two million, eight hundred seventy-one thousand, eight hundred four".