1322428 has 6 divisors (see below), whose sum is σ = 2314256. Its totient is φ = 661212.

The previous prime is 1322423. The next prime is 1322437. The reversal of 1322428 is 8242231.

It is a junction number, because it is equal to n+sod(n) for n = 1322399 and 1322408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322423) 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, 165300 + ... + 165307.

2^1322428 is an apocalyptic number.

It is an amenable number.

1322428 is a deficient number, since it is larger than the sum of its proper divisors (991828).

1322428 is a wasteful number, since it uses less digits than its factorization.

1322428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330611 (or 330609 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 1322428 is about 1149.9686952261. The cubic root of 1322428 is about 109.7633479855.

Adding to 1322428 its reverse (8242231), we get a palindrome (9564659).

The spelling of 1322428 in words is "one million, three hundred twenty-two thousand, four hundred twenty-eight".