22372444 has 12 divisors (see below), whose sum is σ = 39185104. Its totient is φ = 11176704.

The previous prime is 22372417. The next prime is 22372451. The reversal of 22372444 is 44427322.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 7129 + ... + 9775.

Almost surely, 2^22372444 is an apocalyptic number.

It is an amenable number.

22372444 is a deficient number, since it is larger than the sum of its proper divisors (16812660).

22372444 is a wasteful number, since it uses less digits than its factorization.

22372444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764 (or 4762 counting only the distinct ones).

The product of its digits is 10752, while the sum is 28.

The square root of 22372444 is about 4729.9517967946. The cubic root of 22372444 is about 281.7763093719.

Adding to 22372444 its reverse (44427322), we get a palindrome (66799766).

The spelling of 22372444 in words is "twenty-two million, three hundred seventy-two thousand, four hundred forty-four".