2187404 has 12 divisors (see below), whose sum is σ = 3846024. Its totient is φ = 1088544.

The previous prime is 2187397. The next prime is 2187421. The reversal of 2187404 is 4047812.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (320502).

2^2187404 is an apocalyptic number.

It is an amenable number.

2187404 is a deficient number, since it is larger than the sum of its proper divisors (1658620).

2187404 is a wasteful number, since it uses less digits than its factorization.

2187404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 2187404 is about 1478.9874914954. The cubic root of 2187404 is about 129.8104535492.

The spelling of 2187404 in words is "two million, one hundred eighty-seven thousand, four hundred four".