22144004 has 12 divisors (see below), whose sum is σ = 39108300. Its totient is φ = 10970208.

The previous prime is 22143997. The next prime is 22144007. The reversal of 22144004 is 40044122.

It can be written as a sum of positive squares in 2 ways, for example, as 7011904 + 15132100 = 2648^2 + 3890^2 .

It is not an unprimeable number, because it can be changed into a prime (22144007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24959 + ... + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (3259025).

Almost surely, 2^22144004 is an apocalyptic number.

It is an amenable number.

22144004 is a deficient number, since it is larger than the sum of its proper divisors (16964296).

22144004 is a wasteful number, since it uses less digits than its factorization.

22144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50902 (or 50900 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22144004 is about 4705.7415993656. The cubic root of 22144004 is about 280.8139749757.

Adding to 22144004 its reverse (40044122), we get a palindrome (62188126).

The spelling of 22144004 in words is "twenty-two million, one hundred forty-four thousand, four".