20344424 has 16 divisors (see below), whose sum is σ = 38361600. Its totient is φ = 10114672.

The previous prime is 20344417. The next prime is 20344433. The reversal of 20344424 is 42444302.

It is a self number, because there is not a number n which added to its sum of digits gives 20344424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5672 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (2397600).

Almost surely, 2^20344424 is an apocalyptic number.

It is an amenable number.

20344424 is a deficient number, since it is larger than the sum of its proper divisors (18017176).

20344424 is a wasteful number, since it uses less digits than its factorization.

20344424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14392 (or 14388 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 20344424 is about 4510.4793536829. The cubic root of 20344424 is about 272.9910859528.

Adding to 20344424 its reverse (42444302), we get a palindrome (62788726).

The spelling of 20344424 in words is "twenty million, three hundred forty-four thousand, four hundred twenty-four".