20264144 has 20 divisors (see below), whose sum is σ = 40098624. Its totient is φ = 9916128.

The previous prime is 20264141. The next prime is 20264159. The reversal of 20264144 is 44146202.

20264144 is nontrivially palindromic in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20264141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12722 + ... + 14225.

Almost surely, 2^20264144 is an apocalyptic number.

It is an amenable number.

20264144 is a deficient number, since it is larger than the sum of its proper divisors (19834480).

20264144 is a wasteful number, since it uses less digits than its factorization.

20264144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27002 (or 26996 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 20264144 is about 4501.5712812306. The cubic root of 20264144 is about 272.6315342881.

It can be divided in two parts, 202 and 64144, that added together give a palindrome (64346).

The spelling of 20264144 in words is "twenty million, two hundred sixty-four thousand, one hundred forty-four".