2782228 has 12 divisors (see below), whose sum is σ = 4885300. Its totient is φ = 1386432.

The previous prime is 2782217. The next prime is 2782279. The reversal of 2782228 is 8222872.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 743044 = 1428^2 + 862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2782228.

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, 400 + ... + 2392.

2^2782228 is an apocalyptic number.

It is an amenable number.

2782228 is a deficient number, since it is larger than the sum of its proper divisors (2103072).

2782228 is a wasteful number, since it uses less digits than its factorization.

2782228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346 (or 2344 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 2782228 is about 1668.0011990403. The cubic root of 2782228 is about 140.6471400861.

The spelling of 2782228 in words is "two million, seven hundred eighty-two thousand, two hundred twenty-eight".