22006422 has 24 divisors (see below), whose sum is σ = 48845160. Its totient is φ = 7156320.

The previous prime is 22006417. The next prime is 22006451. The reversal of 22006422 is 22460022.

It is a happy number.

22006422 is a `hidden beast` number, since 2 + 20 + 0 + 642 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22006395 and 22006404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14172 + ... + 15647.

It is an arithmetic number, because the mean of its divisors is an integer number (2035215).

Almost surely, 2^22006422 is an apocalyptic number.

22006422 is an abundant number, since it is smaller than the sum of its proper divisors (26838738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22006422 is a wasteful number, since it uses less digits than its factorization.

22006422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868 (or 29865 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22006422 is about 4691.1002973716. The cubic root of 22006422 is about 280.2311951048.

Adding to 22006422 its reverse (22460022), we get a palindrome (44466444).

The spelling of 22006422 in words is "twenty-two million, six thousand, four hundred twenty-two".