20106522 has 32 divisors (see below), whose sum is σ = 47035200. Its totient is φ = 6349104.

The previous prime is 20106521. The next prime is 20106589. The reversal of 20106522 is 22560102.

20106522 is a `hidden beast` number, since 2 + 0 + 10 + 652 + 2 = 666.

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 = 20106495 and 20106504.

It is not an unprimeable number, because it can be changed into a prime (20106521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8773 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (1469850).

Almost surely, 2^20106522 is an apocalyptic number.

20106522 is an abundant number, since it is smaller than the sum of its proper divisors (26928678).

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

20106522 is a wasteful number, since it uses less digits than its factorization.

20106522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627 (or 19621 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20106522 is about 4484.0296609188. The cubic root of 20106522 is about 271.9228172731.

Adding to 20106522 its reverse (22560102), we get a palindrome (42666624).

The spelling of 20106522 in words is "twenty million, one hundred six thousand, five hundred twenty-two".