22042005 has 8 divisors (see below), whose sum is σ = 35267232. Its totient is φ = 11755728.

The previous prime is 22042003. The next prime is 22042019. The reversal of 22042005 is 50024022.

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

It is not a de Polignac number, because 22042005 - 2¹ = 22042003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1469467 = 22042005 / (2 + 2 + 0 + 4 + 2 + 0 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042003) by changing a digit.

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, 734719 + ... + 734748.

It is an arithmetic number, because the mean of its divisors is an integer number (4408404).

Almost surely, 2^22042005 is an apocalyptic number.

It is an amenable number.

22042005 is a deficient number, since it is larger than the sum of its proper divisors (13225227).

22042005 is a wasteful number, since it uses less digits than its factorization.

22042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469475.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22042005 is about 4694.8913725453. The cubic root of 22042005 is about 280.3821525091.

Adding to 22042005 its reverse (50024022), we get a palindrome (72066027).

The spelling of 22042005 in words is "twenty-two million, forty-two thousand, five".