22271444 has 12 divisors (see below), whose sum is σ = 41973204. Its totient is φ = 10279104.

The previous prime is 22271407. The next prime is 22271489. The reversal of 22271444 is 44417222.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 14364100 = 2812^2 + 3790^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214097 + ... + 214200.

It is an arithmetic number, because the mean of its divisors is an integer number (3497767).

Almost surely, 2^22271444 is an apocalyptic number.

It is an amenable number.

22271444 is a deficient number, since it is larger than the sum of its proper divisors (19701760).

22271444 is a wasteful number, since it uses less digits than its factorization.

22271444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428314 (or 428312 counting only the distinct ones).

The product of its digits is 3584, while the sum is 26.

The square root of 22271444 is about 4719.2630780663. The cubic root of 22271444 is about 281.3516449726.

Adding to 22271444 its reverse (44417222), we get a palindrome (66688666).

The spelling of 22271444 in words is "twenty-two million, two hundred seventy-one thousand, four hundred forty-four".