20806022 has 16 divisors (see below), whose sum is σ = 32664192. Its totient is φ = 9927360.

The previous prime is 20806003. The next prime is 20806039. The reversal of 20806022 is 22060802.

It is a junction number, because it is equal to n+sod(n) for n = 20805985 and 20806003.

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, 2228 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (2041512).

Almost surely, 2^20806022 is an apocalyptic number.

20806022 is a deficient number, since it is larger than the sum of its proper divisors (11858170).

20806022 is a wasteful number, since it uses less digits than its factorization.

20806022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20806022 is about 4561.3618580420. The cubic root of 20806022 is about 275.0403114459.

Adding to 20806022 its reverse (22060802), we get a palindrome (42866824).

The spelling of 20806022 in words is "twenty million, eight hundred six thousand, twenty-two".