20304424 has 24 divisors (see below), whose sum is σ = 44287290. Its totient is φ = 8701728.

The previous prime is 20304419. The next prime is 20304433. The reversal of 20304424 is 42440302.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 1102500 = 4382^2 + 1050^2 .

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 5 ways as a sum of consecutive naturals, for example, 25507 + ... + 26290.

Almost surely, 2^20304424 is an apocalyptic number.

It is an amenable number.

20304424 is an abundant number, since it is smaller than the sum of its proper divisors (23982866).

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

20304424 is a wasteful number, since it uses less digits than its factorization.

20304424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51817 (or 51806 counting only the distinct ones).

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

The square root of 20304424 is about 4506.0430535005. The cubic root of 20304424 is about 272.8120556071.

Adding to 20304424 its reverse (42440302), we get a palindrome (62744726).

The spelling of 20304424 in words is "twenty million, three hundred four thousand, four hundred twenty-four".