1822228 has 6 divisors (see below), whose sum is σ = 3188906. Its totient is φ = 911112.

The previous prime is 1822217. The next prime is 1822229. The reversal of 1822228 is 8222281.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 425104 = 1182^2 + 652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227775 + ... + 227782.

2^1822228 is an apocalyptic number.

It is an amenable number.

1822228 is a deficient number, since it is larger than the sum of its proper divisors (1366678).

1822228 is a wasteful number, since it uses less digits than its factorization.

1822228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455561 (or 455559 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 1822228 is about 1349.8992555002. The cubic root of 1822228 is about 122.1427157235.

It can be divided in two parts, 1822 and 228, that multiplied together give a triangular number (415416 = T₉₁₁).

The spelling of 1822228 in words is "one million, eight hundred twenty-two thousand, two hundred twenty-eight".