2187474 has 16 divisors (see below), whose sum is σ = 4468608. Its totient is φ = 713552.

The previous prime is 2187463. The next prime is 2187491. The reversal of 2187474 is 4747812.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3597 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (279288).

2^2187474 is an apocalyptic number.

2187474 is an abundant number, since it is smaller than the sum of its proper divisors (2281134).

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

2187474 is a wasteful number, since it uses less digits than its factorization.

2187474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809.

The product of its digits is 12544, while the sum is 33.

The square root of 2187474 is about 1479.0111561445. The cubic root of 2187474 is about 129.8118382401.

Subtracting from 2187474 its sum of digits (33), we obtain a square (2187441 = 1479²).

The spelling of 2187474 in words is "two million, one hundred eighty-seven thousand, four hundred seventy-four".