22005047 has 8 divisors (see below), whose sum is σ = 22912176. Its totient is φ = 21114432.

The previous prime is 22005037. The next prime is 22005073. The reversal of 22005047 is 74050022.

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

It is a cyclic number.

It is not a de Polignac number, because 22005047 - 2⁴ = 22005031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22005037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373 + ... + 6774.

It is an arithmetic number, because the mean of its divisors is an integer number (2864022).

Almost surely, 2^22005047 is an apocalyptic number.

22005047 is a deficient number, since it is larger than the sum of its proper divisors (907129).

22005047 is an equidigital number, since it uses as much as digits as its factorization.

22005047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 22005047 is about 4690.9537409785. The cubic root of 22005047 is about 280.2253585371.

Adding to 22005047 its reverse (74050022), we get a palindrome (96055069).

The spelling of 22005047 in words is "twenty-two million, five thousand, forty-seven".