22350444 has 36 divisors (see below), whose sum is σ = 55386072. Its totient is φ = 6990720.

The previous prime is 22350437. The next prime is 22350451. The reversal of 22350444 is 44405322.

It is an interprime number because it is at equal distance from previous prime (22350437) and next prime (22350451).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 67359 + ... + 67689.

It is an arithmetic number, because the mean of its divisors is an integer number (1538502).

Almost surely, 2^22350444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22350444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27693036).

22350444 is an abundant number, since it is smaller than the sum of its proper divisors (33035628).

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

22350444 is a wasteful number, since it uses less digits than its factorization.

22350444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 22350444 is about 4727.6256196954. The cubic root of 22350444 is about 281.6839172625.

Adding to 22350444 its reverse (44405322), we get a palindrome (66755766).

The spelling of 22350444 in words is "twenty-two million, three hundred fifty thousand, four hundred forty-four".