20520222 has 32 divisors (see below), whose sum is σ = 42169248. Its totient is φ = 6654336.

The previous prime is 20520221. The next prime is 20520229. The reversal of 20520222 is 22202502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520221) 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 15 ways as a sum of consecutive naturals, for example, 54828 + ... + 55200.

It is an arithmetic number, because the mean of its divisors is an integer number (1317789).

Almost surely, 2^20520222 is an apocalyptic number.

20520222 is an abundant number, since it is smaller than the sum of its proper divisors (21649026).

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

20520222 is a wasteful number, since it uses less digits than its factorization.

20520222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20520222 is about 4529.9251649448. The cubic root of 20520222 is about 273.7751454144.

Adding to 20520222 its reverse (22202502), we get a palindrome (42722724).

The spelling of 20520222 in words is "twenty million, five hundred twenty thousand, two hundred twenty-two".