22444452 has 84 divisors (see below), whose sum is σ = 60595920. Its totient is φ = 7266672.

The previous prime is 22444441. The next prime is 22444483. The reversal of 22444452 is 25444422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 125299 + ... + 125477.

It is an arithmetic number, because the mean of its divisors is an integer number (721380).

Almost surely, 2^22444452 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 22444452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30297960).

22444452 is an abundant number, since it is smaller than the sum of its proper divisors (38151468).

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

22444452 is a wasteful number, since it uses less digits than its factorization.

22444452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 227 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 22444452 is about 4737.5575985944. The cubic root of 22444452 is about 282.0782942405.

Adding to 22444452 its reverse (25444422), we get a palindrome (47888874).

The spelling of 22444452 in words is "twenty-two million, four hundred forty-four thousand, four hundred fifty-two".