20430346432 has 28 divisors (see below), whose sum is σ = 41206090816. Its totient is φ = 10047709440.

The previous prime is 20430346427. The next prime is 20430346457. The reversal of 20430346432 is 23464303402.

It is a junction number, because it is equal to n+sod(n) for n = 20430346394 and 20430346403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612688 + ... + 2620495.

Almost surely, 2^20430346432 is an apocalyptic number.

It is an amenable number.

20430346432 is an abundant number, since it is smaller than the sum of its proper divisors (20775744384).

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

20430346432 is an equidigital number, since it uses as much as digits as its factorization.

20430346432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233256 (or 5233246 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 20430346432 its reverse (23464303402), we get a palindrome (43894649834).

The spelling of 20430346432 in words is "twenty billion, four hundred thirty million, three hundred forty-six thousand, four hundred thirty-two".