20440424324 has 12 divisors (see below), whose sum is σ = 35773934364. Its totient is φ = 10219300224.

The previous prime is 20440424261. The next prime is 20440424327. The reversal of 20440424324 is 42342404402.

It can be written as a sum of positive squares in 2 ways, for example, as 5282382400 + 15158041924 = 72680^2 + 123118^2 .

It is not an unprimeable number, because it can be changed into a prime (20440424327) 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, 176249 + ... + 268224.

It is an arithmetic number, because the mean of its divisors is an integer number (2981161197).

Almost surely, 2^20440424324 is an apocalyptic number.

It is an amenable number.

20440424324 is a deficient number, since it is larger than the sum of its proper divisors (15333510040).

20440424324 is a wasteful number, since it uses less digits than its factorization.

20440424324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455974 (or 455972 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 20440424324 its reverse (42342404402), we get a palindrome (62782828726).

The spelling of 20440424324 in words is "twenty billion, four hundred forty million, four hundred twenty-four thousand, three hundred twenty-four".