20424302340 has 72 divisors (see below), whose sum is σ = 61925548608. Its totient is φ = 5027518080.

The previous prime is 20424302309. The next prime is 20424302341. The reversal of 20424302340 is 4320342402.

It is a self number, because there is not a number n which added to its sum of digits gives 20424302340.

It is not an unprimeable number, because it can be changed into a prime (20424302341) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 996976 + ... + 1017255.

It is an arithmetic number, because the mean of its divisors is an integer number (860077064).

Almost surely, 2^20424302340 is an apocalyptic number.

20424302340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424302340 is an abundant number, since it is smaller than the sum of its proper divisors (41501246268).

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

20424302340 is a wasteful number, since it uses less digits than its factorization.

20424302340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014269 (or 2014254 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20424302340 its reverse (4320342402), we get a palindrome (24744644742).

The spelling of 20424302340 in words is "twenty billion, four hundred twenty-four million, three hundred two thousand, three hundred forty".