20306022 has 32 divisors (see below), whose sum is σ = 46638720. Its totient is φ = 5829120.

The previous prime is 20306017. The next prime is 20306059. The reversal of 20306022 is 22060302.

It is a junction number, because it is equal to n+sod(n) for n = 20305992 and 20306010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6843 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (1457460).

Almost surely, 2^20306022 is an apocalyptic number.

20306022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20306022 is an abundant number, since it is smaller than the sum of its proper divisors (26332698).

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

20306022 is a wasteful number, since it uses less digits than its factorization.

20306022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16228.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20306022 is about 4506.2203674476. The cubic root of 20306022 is about 272.8192123763.

Adding to 20306022 its reverse (22060302), we get a palindrome (42366324).

The spelling of 20306022 in words is "twenty million, three hundred six thousand, twenty-two".