20144672 has 24 divisors (see below), whose sum is σ = 39847500. Its totient is φ = 10024704.

The previous prime is 20144671. The next prime is 20144737. The reversal of 20144672 is 27644102.

It can be written as a sum of positive squares in 2 ways, for example, as 20106256 + 38416 = 4484^2 + 196^2 .

It is not an unprimeable number, because it can be changed into a prime (20144671) 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, 5954 + ... + 8702.

Almost surely, 2^20144672 is an apocalyptic number.

It is an amenable number.

20144672 is a deficient number, since it is larger than the sum of its proper divisors (19702828).

20144672 is a wasteful number, since it uses less digits than its factorization.

20144672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 2980 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20144672 is about 4488.2816310922. The cubic root of 20144672 is about 272.0946902155.

Adding to 20144672 its reverse (27644102), we get a palindrome (47788774).

The spelling of 20144672 in words is "twenty million, one hundred forty-four thousand, six hundred seventy-two".