20320323424 has 24 divisors (see below), whose sum is σ = 41296143168. Its totient is φ = 9832414080.

The previous prime is 20320323389. The next prime is 20320323427. The reversal of 20320323424 is 42432302302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320323427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10241107 + ... + 10243090.

It is an arithmetic number, because the mean of its divisors is an integer number (1720672632).

Almost surely, 2^20320323424 is an apocalyptic number.

It is an amenable number.

20320323424 is an abundant number, since it is smaller than the sum of its proper divisors (20975819744).

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

20320323424 is a wasteful number, since it uses less digits than its factorization.

20320323424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20484238 (or 20484230 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 20320323424 its reverse (42432302302), we get a palindrome (62752625726).

The spelling of 20320323424 in words is "twenty billion, three hundred twenty million, three hundred twenty-three thousand, four hundred twenty-four".