2644228 has 12 divisors (see below), whose sum is σ = 4703692. Its totient is φ = 1300320.

The previous prime is 2644219. The next prime is 2644247. The reversal of 2644228 is 8224462.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 2365444 = 528^2 + 1538^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2644196 and 2644205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5175 + ... + 5662.

2^2644228 is an apocalyptic number.

It is an amenable number.

2644228 is a deficient number, since it is larger than the sum of its proper divisors (2059464).

2644228 is a wasteful number, since it uses less digits than its factorization.

2644228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902 (or 10900 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 2644228 is about 1626.1082374799. The cubic root of 2644228 is about 138.2822062315.

The spelling of 2644228 in words is "two million, six hundred forty-four thousand, two hundred twenty-eight".