20205422 has 8 divisors (see below), whose sum is σ = 30367872. Its totient is φ = 10082800.

The previous prime is 20205389. The next prime is 20205467. The reversal of 20205422 is 22450202.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20205422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8654 + ... + 10737.

It is an arithmetic number, because the mean of its divisors is an integer number (3795984).

Almost surely, 2^20205422 is an apocalyptic number.

20205422 is a deficient number, since it is larger than the sum of its proper divisors (10162450).

20205422 is a wasteful number, since it uses less digits than its factorization.

20205422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19914.

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

The square root of 20205422 is about 4495.0441599611. The cubic root of 20205422 is about 272.3679330864.

Adding to 20205422 its reverse (22450202), we get a palindrome (42655624).

The spelling of 20205422 in words is "twenty million, two hundred five thousand, four hundred twenty-two".