20144512 has 32 divisors (see below), whose sum is σ = 40336920. Its totient is φ = 10020864.

The previous prime is 20144497. The next prime is 20144519. The reversal of 20144512 is 21544102.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 20144512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42903 + ... + 43369.

Almost surely, 2^20144512 is an apocalyptic number.

It is an amenable number.

20144512 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20144512 is an equidigital number, since it uses as much as digits as its factorization.

20144512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20144512 is about 4488.2638068634. The cubic root of 20144512 is about 272.0939698386.

Adding to 20144512 its reverse (21544102), we get a palindrome (41688614).

The spelling of 20144512 in words is "twenty million, one hundred forty-four thousand, five hundred twelve".