2189688 has 16 divisors (see below), whose sum is σ = 5474280. Its totient is φ = 729888.

The previous prime is 2189647. The next prime is 2189699. The reversal of 2189688 is 8869812.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45595 + ... + 45642.

2^2189688 is an apocalyptic number.

It is an amenable number.

2189688 is an abundant number, since it is smaller than the sum of its proper divisors (3284592).

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

2189688 is a wasteful number, since it uses less digits than its factorization.

2189688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91246 (or 91242 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 2189688 is about 1479.7594399091. The cubic root of 2189688 is about 129.8556187987.

The spelling of 2189688 in words is "two million, one hundred eighty-nine thousand, six hundred eighty-eight".