2188344 has 32 divisors (see below), whose sum is σ = 5760000. Its totient is φ = 690912.

The previous prime is 2188343. The next prime is 2188349. The reversal of 2188344 is 4438812.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (180000).

2^2188344 is an apocalyptic number.

2188344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2188344 is an abundant number, since it is smaller than the sum of its proper divisors (3571656).

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

2188344 is a wasteful number, since it uses less digits than its factorization.

2188344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827 (or 4823 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 2188344 is about 1479.3052423351. The cubic root of 2188344 is about 129.8290455044.

The spelling of 2188344 in words is "two million, one hundred eighty-eight thousand, three hundred forty-four".