2188842 has 16 divisors (see below), whose sum is σ = 4392192. Its totient is φ = 727200.

The previous prime is 2188831. The next prime is 2188861. The reversal of 2188842 is 2488812.

It is an Ulam number.

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, 3303 + ... + 3909.

It is an arithmetic number, because the mean of its divisors is an integer number (274512).

2^2188842 is an apocalyptic number.

2188842 is an abundant number, since it is smaller than the sum of its proper divisors (2203350).

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

2188842 is a wasteful number, since it uses less digits than its factorization.

2188842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213.

The product of its digits is 8192, while the sum is 33.

The square root of 2188842 is about 1479.4735550188. The cubic root of 2188842 is about 129.8388931275.

The spelling of 2188842 in words is "two million, one hundred eighty-eight thousand, eight hundred forty-two".