2188912 has 20 divisors (see below), whose sum is σ = 4626936. Its totient is φ = 994880.

The previous prime is 2188909. The next prime is 2188913. The reversal of 2188912 is 2198812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6043 + ... + 6394.

2^2188912 is an apocalyptic number.

2188912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2188912 is an abundant number, since it is smaller than the sum of its proper divisors (2438024).

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

2188912 is a wasteful number, since it uses less digits than its factorization.

2188912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456 (or 12450 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 2188912 is about 1479.4972118933. The cubic root of 2188912 is about 129.8402772119.

The spelling of 2188912 in words is "two million, one hundred eighty-eight thousand, nine hundred twelve".