20144133 has 20 divisors (see below), whose sum is σ = 31864140. Its totient is φ = 12638592.

The previous prime is 20144129. The next prime is 20144143. The reversal of 20144133 is 33144102.

It can be written as a sum of positive squares in 2 ways, for example, as 9529569 + 10614564 = 3087^2 + 3258^2 .

It is not a de Polignac number, because 20144133 - 2² = 20144129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5938 + ... + 8691.

It is an arithmetic number, because the mean of its divisors is an integer number (1593207).

Almost surely, 2^20144133 is an apocalyptic number.

It is an amenable number.

20144133 is a deficient number, since it is larger than the sum of its proper divisors (11720007).

20144133 is a wasteful number, since it uses less digits than its factorization.

20144133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14658 (or 14649 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20144133 is about 4488.2215854389. The cubic root of 20144133 is about 272.0922634307.

Adding to 20144133 its reverse (33144102), we get a palindrome (53288235).

The spelling of 20144133 in words is "twenty million, one hundred forty-four thousand, one hundred thirty-three".