1422644 has 12 divisors (see below), whose sum is σ = 2620800. Its totient is φ = 673848.

The previous prime is 1422637. The next prime is 1422647. The reversal of 1422644 is 4462241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422647) 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 3 ways as a sum of consecutive naturals, for example, 9284 + ... + 9435.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

2^1422644 is an apocalyptic number.

It is an amenable number.

1422644 is a deficient number, since it is larger than the sum of its proper divisors (1198156).

1422644 is a wasteful number, since it uses less digits than its factorization.

1422644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18742 (or 18740 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 1422644 is about 1192.7464106003. The cubic root of 1422644 is about 112.4688045192.

Adding to 1422644 its reverse (4462241), we get a palindrome (5884885).

The spelling of 1422644 in words is "one million, four hundred twenty-two thousand, six hundred forty-four".