20168522 has 12 divisors (see below), whose sum is σ = 33253458. Its totient is φ = 9167400.

The previous prime is 20168521. The next prime is 20168527. The reversal of 20168522 is 22586102.

It can be written as a sum of positive squares in only one way, i.e., 13256881 + 6911641 = 3641^2 + 2629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20168491 and 20168500.

It is not an unprimeable number, because it can be changed into a prime (20168521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41429 + ... + 41912.

Almost surely, 2^20168522 is an apocalyptic number.

20168522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20168522 is a deficient number, since it is larger than the sum of its proper divisors (13084936).

20168522 is a wasteful number, since it uses less digits than its factorization.

20168522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83365 (or 83354 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20168522 is about 4490.9377639865. The cubic root of 20168522 is about 272.2020287549.

The spelling of 20168522 in words is "twenty million, one hundred sixty-eight thousand, five hundred twenty-two".