20733222 has 16 divisors (see below), whose sum is σ = 41546160. Its totient is φ = 6897792.

The previous prime is 20733221. The next prime is 20733227. The reversal of 20733222 is 22233702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 378 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (2596635).

Almost surely, 2^20733222 is an apocalyptic number.

20733222 is an abundant number, since it is smaller than the sum of its proper divisors (20812938).

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

20733222 is a wasteful number, since it uses less digits than its factorization.

20733222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20733222 is about 4553.3747923930. The cubic root of 20733222 is about 274.7191490840.

Adding to 20733222 its reverse (22233702), we get a palindrome (42966924).

The spelling of 20733222 in words is "twenty million, seven hundred thirty-three thousand, two hundred twenty-two".