20023424 has 32 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 9959680.

The previous prime is 20023417. The next prime is 20023429. The reversal of 20023424 is 42432002.

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

It is not an unprimeable number, because it can be changed into a prime (20023429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39557 + ... + 40059.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^20023424 is an apocalyptic number.

It is an amenable number.

20023424 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20023424 is an equidigital number, since it uses as much as digits as its factorization.

20023424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20023424 is about 4474.7540714547. The cubic root of 20023424 is about 271.5476911791.

Adding to 20023424 its reverse (42432002), we get a palindrome (62455426).

The spelling of 20023424 in words is "twenty million, twenty-three thousand, four hundred twenty-four".