22244472 has 24 divisors (see below), whose sum is σ = 60245640. Its totient is φ = 7414800.

The previous prime is 22244441. The next prime is 22244477. The reversal of 22244472 is 27444222.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244477) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 154404 + ... + 154547.

It is an arithmetic number, because the mean of its divisors is an integer number (2510235).

Almost surely, 2^22244472 is an apocalyptic number.

It is an amenable number.

22244472 is an abundant number, since it is smaller than the sum of its proper divisors (38001168).

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

22244472 is a wasteful number, since it uses less digits than its factorization.

22244472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308963 (or 308956 counting only the distinct ones).

The product of its digits is 7168, while the sum is 27.

The square root of 22244472 is about 4716.4045627999. The cubic root of 22244472 is about 281.2380214158.

Adding to 22244472 its reverse (27444222), we get a palindrome (49688694).

The spelling of 22244472 in words is "twenty-two million, two hundred forty-four thousand, four hundred seventy-two".