22004146 has 8 divisors (see below), whose sum is σ = 34441344. Its totient is φ = 10523700.

The previous prime is 22004119. The next prime is 22004149. The reversal of 22004146 is 64140022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22004149) 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 3 ways as a sum of consecutive naturals, for example, 239130 + ... + 239221.

It is an arithmetic number, because the mean of its divisors is an integer number (4305168).

Almost surely, 2^22004146 is an apocalyptic number.

22004146 is a deficient number, since it is larger than the sum of its proper divisors (12437198).

22004146 is a wasteful number, since it uses less digits than its factorization.

22004146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478376.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22004146 is about 4690.8577040878. The cubic root of 22004146 is about 280.2215338615.

Adding to 22004146 its reverse (64140022), we get a palindrome (86144168).

The spelling of 22004146 in words is "twenty-two million, four thousand, one hundred forty-six".