20144036 has 24 divisors (see below), whose sum is σ = 38648064. Its totient is φ = 9110880.

The previous prime is 20144027. The next prime is 20144039. The reversal of 20144036 is 63044102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20143999 and 20144017.

It is not an unprimeable number, because it can be changed into a prime (20144039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8786 + ... + 10838.

It is an arithmetic number, because the mean of its divisors is an integer number (1610336).

Almost surely, 2^20144036 is an apocalyptic number.

It is an amenable number.

20144036 is a deficient number, since it is larger than the sum of its proper divisors (18504028).

20144036 is a wasteful number, since it uses less digits than its factorization.

20144036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2289 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20144036 is about 4488.2107793641. The cubic root of 20144036 is about 272.0918266950.

Adding to 20144036 its reverse (63044102), we get a palindrome (83188138).

The spelling of 20144036 in words is "twenty million, one hundred forty-four thousand, thirty-six".