2187854 has 4 divisors (see below), whose sum is σ = 3281784. Its totient is φ = 1093926.

The previous prime is 2187851. The next prime is 2187863. The reversal of 2187854 is 4587812.

It is a semiprime because it is the product of two primes.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546962 + ... + 546965.

It is an arithmetic number, because the mean of its divisors is an integer number (820446).

2^2187854 is an apocalyptic number.

2187854 is a deficient number, since it is larger than the sum of its proper divisors (1093930).

2187854 is a wasteful number, since it uses less digits than its factorization.

2187854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093929.

The product of its digits is 17920, while the sum is 35.

The square root of 2187854 is about 1479.1396147761. The cubic root of 2187854 is about 129.8193546178.

The spelling of 2187854 in words is "two million, one hundred eighty-seven thousand, eight hundred fifty-four".