2871784 has 8 divisors (see below), whose sum is σ = 5384610. Its totient is φ = 1435888.

The previous prime is 2871767. The next prime is 2871797. The reversal of 2871784 is 4871782.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 1258884 = 1270^2 + 1122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179479 + ... + 179494.

2^2871784 is an apocalyptic number.

It is an amenable number.

2871784 is a deficient number, since it is larger than the sum of its proper divisors (2512826).

2871784 is a wasteful number, since it uses less digits than its factorization.

2871784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358979 (or 358975 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The square root of 2871784 is about 1694.6338837637. The cubic root of 2871784 is about 142.1403096387.

It can be divided in two parts, 2871 and 784, that added together give a triangular number (3655 = T₈₅).

The spelling of 2871784 in words is "two million, eight hundred seventy-one thousand, seven hundred eighty-four".