2188422 has 12 divisors (see below), whose sum is σ = 4741620. Its totient is φ = 729468.

The previous prime is 2188411. The next prime is 2188429. The reversal of 2188422 is 2248812.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60772 + ... + 60807.

It is an arithmetic number, because the mean of its divisors is an integer number (395135).

2^2188422 is an apocalyptic number.

2188422 is an abundant number, since it is smaller than the sum of its proper divisors (2553198).

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

2188422 is a wasteful number, since it uses less digits than its factorization.

2188422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121587 (or 121584 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 2188422 is about 1479.3316058274. The cubic root of 2188422 is about 129.8305880019.

The spelling of 2188422 in words is "two million, one hundred eighty-eight thousand, four hundred twenty-two".