22004242 has 16 divisors (see below), whose sum is σ = 37416960. Its totient is φ = 9621072.

The previous prime is 22004237. The next prime is 22004251. The reversal of 22004242 is 24240022.

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 7 ways as a sum of consecutive naturals, for example, 21778 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (2338560).

Almost surely, 2^22004242 is an apocalyptic number.

22004242 is a deficient number, since it is larger than the sum of its proper divisors (15412718).

22004242 is a wasteful number, since it uses less digits than its factorization.

22004242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44577.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22004242 is about 4690.8679367469. The cubic root of 22004242 is about 280.2219413791.

Adding to 22004242 its reverse (24240022), we get a palindrome (46244264).

The spelling of 22004242 in words is "twenty-two million, four thousand, two hundred forty-two".