20136222 has 32 divisors (see below), whose sum is σ = 45488160. Its totient is φ = 6600960.

The previous prime is 20136217. The next prime is 20136227. The reversal of 20136222 is 22263102.

It is an interprime number because it is at equal distance from previous prime (20136217) and next prime (20136227).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20136195 and 20136204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (1421505).

Almost surely, 2^20136222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20136222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22744080).

20136222 is an abundant number, since it is smaller than the sum of its proper divisors (25351938).

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

20136222 is a wasteful number, since it uses less digits than its factorization.

20136222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6185 (or 6179 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20136222 is about 4487.3401921406. The cubic root of 20136222 is about 272.0566400934.

Adding to 20136222 its reverse (22263102), we get a palindrome (42399324).

The spelling of 20136222 in words is "twenty million, one hundred thirty-six thousand, two hundred twenty-two".