2190228 has 12 divisors (see below), whose sum is σ = 5110560. Its totient is φ = 730072.

The previous prime is 2190217. The next prime is 2190233. The reversal of 2190228 is 8220912.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2190198 and 2190207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91248 + ... + 91271.

It is an arithmetic number, because the mean of its divisors is an integer number (425880).

2^2190228 is an apocalyptic number.

It is an amenable number.

2190228 is an abundant number, since it is smaller than the sum of its proper divisors (2920332).

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

2190228 is a wasteful number, since it uses less digits than its factorization.

2190228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182526 (or 182524 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2190228 is about 1479.9418907511. The cubic root of 2190228 is about 129.8662925067.

The spelling of 2190228 in words is "two million, one hundred ninety thousand, two hundred twenty-eight".