20163244 has 12 divisors (see below), whose sum is σ = 35326368. Its totient is φ = 10070000.

The previous prime is 20163239. The next prime is 20163271. The reversal of 20163244 is 44236102.

It is a happy number.

It is a plaindrome in base 16.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1869 + ... + 6619.

It is an arithmetic number, because the mean of its divisors is an integer number (2943864).

Almost surely, 2^20163244 is an apocalyptic number.

It is an amenable number.

20163244 is a deficient number, since it is larger than the sum of its proper divisors (15163124).

20163244 is a wasteful number, since it uses less digits than its factorization.

20163244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20163244 is about 4490.3500977095. The cubic root of 20163244 is about 272.1782820528.

Adding to 20163244 its reverse (44236102), we get a palindrome (64399346).

The spelling of 20163244 in words is "twenty million, one hundred sixty-three thousand, two hundred forty-four".