20430324420 has 48 divisors (see below), whose sum is σ = 62405356608. Its totient is φ = 4952805760.

The previous prime is 20430324419. The next prime is 20430324437. The reversal of 20430324420 is 2442303402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15476859 + ... + 15478178.

It is an arithmetic number, because the mean of its divisors is an integer number (1300111596).

Almost surely, 2^20430324420 is an apocalyptic number.

20430324420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430324420 is an abundant number, since it is smaller than the sum of its proper divisors (41975032188).

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

20430324420 is a wasteful number, since it uses less digits than its factorization.

20430324420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30955060 (or 30955058 counting only the distinct ones).

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

Adding to 20430324420 its reverse (2442303402), we get a palindrome (22872627822).

The spelling of 20430324420 in words is "twenty billion, four hundred thirty million, three hundred twenty-four thousand, four hundred twenty".