20043424 has 24 divisors (see below), whose sum is σ = 40425588. Its totient is φ = 9776640.

The previous prime is 20043409. The next prime is 20043433. The reversal of 20043424 is 42434002.

It can be written as a sum of positive squares in 2 ways, for example, as 14899600 + 5143824 = 3860^2 + 2268^2 .

It is an unprimeable number.

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, 6327 + ... + 8950.

Almost surely, 2^20043424 is an apocalyptic number.

It is an amenable number.

20043424 is an abundant number, since it is smaller than the sum of its proper divisors (20382164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20043424 is a wasteful number, since it uses less digits than its factorization.

20043424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15328 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20043424 is about 4476.9882733820. The cubic root of 20043424 is about 271.6380711032.

Adding to 20043424 its reverse (42434002), we get a palindrome (62477426).

The spelling of 20043424 in words is "twenty million, forty-three thousand, four hundred twenty-four".