2187228 has 24 divisors (see below), whose sum is σ = 5151888. Its totient is φ = 722176.

The previous prime is 2187217. The next prime is 2187233. The reversal of 2187228 is 8227812.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2187195 and 2187204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (214662).

2^2187228 is an apocalyptic number.

It is an amenable number.

2187228 is an abundant number, since it is smaller than the sum of its proper divisors (2964660).

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

2187228 is a wasteful number, since it uses less digits than its factorization.

2187228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1731 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 2187228 is about 1478.9279901334. The cubic root of 2187228 is about 129.8069719103.

It can be divided in two parts, 2187 and 228, that added together give a triangular number (2415 = T₆₉).

The spelling of 2187228 in words is "two million, one hundred eighty-seven thousand, two hundred twenty-eight".