2228187 has 32 divisors (see below), whose sum is σ = 3512320. Its totient is φ = 1244160.

The previous prime is 2228183. The next prime is 2228189. The reversal of 2228187 is 7818222.

It is a happy number.

It is not a de Polignac number, because 2228187 - 2² = 2228183 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22923 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (109760).

2^2228187 is an apocalyptic number.

2228187 is a deficient number, since it is larger than the sum of its proper divisors (1284133).

2228187 is a wasteful number, since it uses less digits than its factorization.

2228187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

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

The square root of 2228187 is about 1492.7112915765. The cubic root of 2228187 is about 130.6122403079.

It can be divided in two parts, 2228 and 187, that added together give a triangular number (2415 = T₆₉).

The spelling of 2228187 in words is "two million, two hundred twenty-eight thousand, one hundred eighty-seven".