20522112 has 64 divisors (see below), whose sum is σ = 58719360. Its totient is φ = 6312960.

The previous prime is 20522083. The next prime is 20522113. The reversal of 20522112 is 21122502.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 20522091 and 20522100.

It is not an unprimeable number, because it can be changed into a prime (20522113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937 + ... + 7047.

It is an arithmetic number, because the mean of its divisors is an integer number (917490).

Almost surely, 2^20522112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20522112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29359680).

20522112 is an abundant number, since it is smaller than the sum of its proper divisors (38197248).

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

20522112 is a wasteful number, since it uses less digits than its factorization.

20522112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20522112 is about 4530.1337728593. The cubic root of 20522112 is about 273.7835504427.

Adding to 20522112 its reverse (21122502), we get a palindrome (41644614).

The spelling of 20522112 in words is "twenty million, five hundred twenty-two thousand, one hundred twelve".