22271744 has 54 divisors (see below), whose sum is σ = 48933360. Its totient is φ = 10109440.

The previous prime is 22271731. The next prime is 22271761. The reversal of 22271744 is 44717222.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 30617 + ... + 31335.

Almost surely, 2^22271744 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 22271744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24466680).

22271744 is an abundant number, since it is smaller than the sum of its proper divisors (26661616).

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

22271744 is an equidigital number, since it uses as much as digits as its factorization.

22271744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 732 counting only the distinct ones).

The product of its digits is 6272, while the sum is 29.

The square root of 22271744 is about 4719.2948625828. The cubic root of 22271744 is about 281.3529082512.

Adding to 22271744 its reverse (44717222), we get a palindrome (66988966).

The spelling of 22271744 in words is "twenty-two million, two hundred seventy-one thousand, seven hundred forty-four".