20424320430 has 16 divisors (see below), whose sum is σ = 49018369104. Its totient is φ = 5446485440.

The previous prime is 20424320381. The next prime is 20424320473. The reversal of 20424320430 is 3402342402.

It is a self number, because there is not a number n which added to its sum of digits gives 20424320430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340405311 + ... + 340405370.

It is an arithmetic number, because the mean of its divisors is an integer number (3063648069).

Almost surely, 2^20424320430 is an apocalyptic number.

20424320430 is an abundant number, since it is smaller than the sum of its proper divisors (28594048674).

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

20424320430 is a wasteful number, since it uses less digits than its factorization.

20424320430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680810691.

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

Adding to 20424320430 its reverse (3402342402), we get a palindrome (23826662832).

The spelling of 20424320430 in words is "twenty billion, four hundred twenty-four million, three hundred twenty thousand, four hundred thirty".