20320242444 has 24 divisors (see below), whose sum is σ = 52682110320. Its totient is φ = 6773414112.

The previous prime is 20320242433. The next prime is 20320242457. The reversal of 20320242444 is 44424202302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94075089 + ... + 94075304.

It is an arithmetic number, because the mean of its divisors is an integer number (2195087930).

Almost surely, 2^20320242444 is an apocalyptic number.

It is an amenable number.

20320242444 is an abundant number, since it is smaller than the sum of its proper divisors (32361867876).

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

20320242444 is a wasteful number, since it uses less digits than its factorization.

20320242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188150406 (or 188150398 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20320242444 its reverse (44424202302), we get a palindrome (64744444746).

The spelling of 20320242444 in words is "twenty billion, three hundred twenty million, two hundred forty-two thousand, four hundred forty-four".