1808228 has 12 divisors (see below), whose sum is σ = 3209472. Its totient is φ = 891240.

The previous prime is 1808207. The next prime is 1808243. The reversal of 1808228 is 8228081.

It is a self number, because there is not a number n which added to its sum of digits gives 1808228.

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, 2900 + ... + 3467.

It is an arithmetic number, because the mean of its divisors is an integer number (267456).

2^1808228 is an apocalyptic number.

It is an amenable number.

1808228 is a deficient number, since it is larger than the sum of its proper divisors (1401244).

1808228 is a wasteful number, since it uses less digits than its factorization.

1808228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442 (or 6440 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 1808228 is about 1344.7036848317. The cubic root of 1808228 is about 121.8291076830.

The spelling of 1808228 in words is "one million, eight hundred eight thousand, two hundred twenty-eight".