2188236 has 12 divisors (see below), whose sum is σ = 5105912. Its totient is φ = 729408.

The previous prime is 2188231. The next prime is 2188237. The reversal of 2188236 is 6328812.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2188231) 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, 91165 + ... + 91188.

2^2188236 is an apocalyptic number.

It is an amenable number.

2188236 is an abundant number, since it is smaller than the sum of its proper divisors (2917676).

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

2188236 is a wasteful number, since it uses less digits than its factorization.

2188236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182360 (or 182358 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 2188236 is about 1479.2687382623. The cubic root of 2188236 is about 129.8269096782.

The spelling of 2188236 in words is "two million, one hundred eighty-eight thousand, two hundred thirty-six".