20105422 has 16 divisors (see below), whose sum is σ = 31514112. Its totient is φ = 9608760.

The previous prime is 20105419. The next prime is 20105443. The reversal of 20105422 is 22450102.

It is a junction number, because it is equal to n+sod(n) for n = 20105396 and 20105405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3193 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (1969632).

Almost surely, 2^20105422 is an apocalyptic number.

20105422 is a deficient number, since it is larger than the sum of its proper divisors (11408690).

20105422 is a wasteful number, since it uses less digits than its factorization.

20105422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20105422 is about 4483.9070017118. The cubic root of 20105422 is about 271.9178583423.

Adding to 20105422 its reverse (22450102), we get a palindrome (42555524).

The spelling of 20105422 in words is "twenty million, one hundred five thousand, four hundred twenty-two".