22222244 has 12 divisors (see below), whose sum is σ = 42424368. Its totient is φ = 10101000.

The previous prime is 22222223. The next prime is 22222253. The reversal of 22222244 is 44222222.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

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 3 ways as a sum of consecutive naturals, for example, 252482 + ... + 252569.

It is an arithmetic number, because the mean of its divisors is an integer number (3535364).

Almost surely, 2^22222244 is an apocalyptic number.

It is an amenable number.

22222244 is a deficient number, since it is larger than the sum of its proper divisors (20202124).

22222244 is a wasteful number, since it uses less digits than its factorization.

22222244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505066 (or 505064 counting only the distinct ones).

The product of its digits is 1024, while the sum is 20.

The square root of 22222244 is about 4714.0475177919. The cubic root of 22222244 is about 281.1443136077.

Adding to 22222244 its reverse (44222222), we get a palindrome (66444466).

The spelling of 22222244 in words is "twenty-two million, two hundred twenty-two thousand, two hundred forty-four".