1228822 has 12 divisors (see below), whose sum is σ = 2144340. Its totient is φ = 526596.

The previous prime is 1228789. The next prime is 1228837. The reversal of 1228822 is 2288221.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 6172 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (178695).

2^1228822 is an apocalyptic number.

1228822 is a deficient number, since it is larger than the sum of its proper divisors (915518).

1228822 is a wasteful number, since it uses less digits than its factorization.

1228822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555 (or 12548 counting only the distinct ones).

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

The square root of 1228822 is about 1108.5224400074. The cubic root of 1228822 is about 107.1099112248.

The spelling of 1228822 in words is "one million, two hundred twenty-eight thousand, eight hundred twenty-two".