20144522 has 12 divisors (see below), whose sum is σ = 31891986. Its totient is φ = 9541800.

The previous prime is 20144521. The next prime is 20144549. The reversal of 20144522 is 22544102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 6974881 = 3629^2 + 2641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20144494 and 20144503.

It is not an unprimeable number, because it can be changed into a prime (20144521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13229 + ... + 14672.

Almost surely, 2^20144522 is an apocalyptic number.

20144522 is a deficient number, since it is larger than the sum of its proper divisors (11747464).

20144522 is a wasteful number, since it uses less digits than its factorization.

20144522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27941 (or 27922 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20144522 is about 4488.2649208798. The cubic root of 20144522 is about 272.0940148623.

Adding to 20144522 its reverse (22544102), we get a palindrome (42688624).

The spelling of 20144522 in words is "twenty million, one hundred forty-four thousand, five hundred twenty-two".