22423144 has 8 divisors (see below), whose sum is σ = 42043410. Its totient is φ = 11211568.

The previous prime is 22423133. The next prime is 22423169. The reversal of 22423144 is 44132422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21734244 + 688900 = 4662^2 + 830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1401439 + ... + 1401454.

Almost surely, 2^22423144 is an apocalyptic number.

It is an amenable number.

22423144 is a deficient number, since it is larger than the sum of its proper divisors (19620266).

22423144 is a wasteful number, since it uses less digits than its factorization.

22423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802899 (or 2802895 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 22423144 is about 4735.3082265044. The cubic root of 22423144 is about 281.9890007949.

Adding to 22423144 its reverse (44132422), we get a palindrome (66555566).

The spelling of 22423144 in words is "twenty-two million, four hundred twenty-three thousand, one hundred forty-four".