1122228 has 24 divisors (see below), whose sum is σ = 2909760. Its totient is φ = 374040.

The previous prime is 1122227. The next prime is 1122241. The reversal of 1122228 is 8222211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1122228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122227) 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 in 7 ways as a sum of consecutive naturals, for example, 5088 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (121240).

2^1122228 is an apocalyptic number.

1122228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1122228 is an abundant number, since it is smaller than the sum of its proper divisors (1787532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122228 is a wasteful number, since it uses less digits than its factorization.

1122228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404 (or 10396 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 1122228 is about 1059.3526325072. The cubic root of 1122228 is about 103.9186987874.

Adding to 1122228 its reverse (8222211), we get a palindrome (9344439).

The spelling of 1122228 in words is "one million, one hundred twenty-two thousand, two hundred twenty-eight".