2722228 has 12 divisors (see below), whose sum is σ = 4796512. Its totient is φ = 1351800.

The previous prime is 2722219. The next prime is 2722231. The reversal of 2722228 is 8222272.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 1650 + ... + 2857.

2^2722228 is an apocalyptic number.

It is an amenable number.

2722228 is a deficient number, since it is larger than the sum of its proper divisors (2074284).

2722228 is a wasteful number, since it uses less digits than its factorization.

2722228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4660 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 2722228 is about 1649.9175736988. The cubic root of 2722228 is about 139.6287442555.

It can be divided in two parts, 272 and 2228, that added together give a square (2500 = 50²).

The spelling of 2722228 in words is "two million, seven hundred twenty-two thousand, two hundred twenty-eight".