20363144 has 16 divisors (see below), whose sum is σ = 40427100. Its totient is φ = 9582592.

The previous prime is 20363143. The next prime is 20363149. The reversal of 20363144 is 44136302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17960644 + 2402500 = 4238^2 + 1550^2 .

It is not an unprimeable number, because it can be changed into a prime (20363141) by changing a digit.

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, 74729 + ... + 75000.

Almost surely, 2^20363144 is an apocalyptic number.

It is an amenable number.

20363144 is a deficient number, since it is larger than the sum of its proper divisors (20063956).

20363144 is a wasteful number, since it uses less digits than its factorization.

20363144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149752 (or 149748 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20363144 is about 4512.5540439977. The cubic root of 20363144 is about 273.0747915500.

Adding to 20363144 its reverse (44136302), we get a palindrome (64499446).

The spelling of 20363144 in words is "twenty million, three hundred sixty-three thousand, one hundred forty-four".