20006422 has 8 divisors (see below), whose sum is σ = 30127176. Its totient is φ = 9964032.

The previous prime is 20006419. The next prime is 20006423. The reversal of 20006422 is 22460002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20006396 and 20006405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18948 + ... + 19975.

It is an arithmetic number, because the mean of its divisors is an integer number (3765897).

Almost surely, 2^20006422 is an apocalyptic number.

20006422 is a deficient number, since it is larger than the sum of its proper divisors (10120754).

20006422 is a wasteful number, since it uses less digits than its factorization.

20006422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39182.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20006422 is about 4472.8538987988. The cubic root of 20006422 is about 271.4708118669.

Adding to 20006422 its reverse (22460002), we get a palindrome (42466424).

The spelling of 20006422 in words is "twenty million, six thousand, four hundred twenty-two".