2187874 has 12 divisors (see below), whose sum is σ = 3554226. Its totient is φ = 1009632.

The previous prime is 2187863. The next prime is 2187877. The reversal of 2187874 is 4787812.

It can be written as a sum of positive squares in 3 ways, for example, as 731025 + 1456849 = 855^2 + 1207^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2187877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2899 + ... + 3574.

2^2187874 is an apocalyptic number.

2187874 is a deficient number, since it is larger than the sum of its proper divisors (1366352).

2187874 is a wasteful number, since it uses less digits than its factorization.

2187874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501 (or 6488 counting only the distinct ones).

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

The square root of 2187874 is about 1479.1463754477. The cubic root of 2187874 is about 129.8197501925.

It can be divided in two parts, 218787 and 4, that added together give a triangular number (218791 = T₆₆₁).

The spelling of 2187874 in words is "two million, one hundred eighty-seven thousand, eight hundred seventy-four".