1622444 has 6 divisors (see below), whose sum is σ = 2839284. Its totient is φ = 811220.

The previous prime is 1622437. The next prime is 1622449. The reversal of 1622444 is 4442261.

It is not an unprimeable number, because it can be changed into a prime (1622449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202802 + ... + 202809.

It is an arithmetic number, because the mean of its divisors is an integer number (473214).

2^1622444 is an apocalyptic number.

It is an amenable number.

1622444 is a deficient number, since it is larger than the sum of its proper divisors (1216840).

1622444 is a wasteful number, since it uses less digits than its factorization.

1622444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405615 (or 405613 counting only the distinct ones).

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

The square root of 1622444 is about 1273.7519381732. The cubic root of 1622444 is about 117.5050608956.

The spelling of 1622444 in words is "one million, six hundred twenty-two thousand, four hundred forty-four".