22005242 has 16 divisors (see below), whose sum is σ = 39942720. Its totient is φ = 8875968.

The previous prime is 22005241. The next prime is 22005271. The reversal of 22005242 is 24250022.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22005242.

It is not an unprimeable number, because it can be changed into a prime (22005241) 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, 45992 + ... + 46467.

It is an arithmetic number, because the mean of its divisors is an integer number (2496420).

Almost surely, 2^22005242 is an apocalyptic number.

22005242 is a deficient number, since it is larger than the sum of its proper divisors (17937478).

22005242 is a wasteful number, since it uses less digits than its factorization.

22005242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92485.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22005242 is about 4690.9745256183. The cubic root of 22005242 is about 280.2261862833.

Adding to 22005242 its reverse (24250022), we get a palindrome (46255264).

The spelling of 22005242 in words is "twenty-two million, five thousand, two hundred forty-two".