20430440030 has 256 divisors, whose sum is σ = 52620503040. Its totient is φ = 5496422400.

The previous prime is 20430440027. The next prime is 20430440039. The reversal of 20430440030 is 3004403402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20430439984 and 20430440011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430440039) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35905586 + ... + 35906154.

It is an arithmetic number, because the mean of its divisors is an integer number (205548840).

Almost surely, 2^20430440030 is an apocalyptic number.

20430440030 is an abundant number, since it is smaller than the sum of its proper divisors (32190063010).

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

20430440030 is a wasteful number, since it uses less digits than its factorization.

20430440030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20430440030 its reverse (3004403402), we get a palindrome (23434843432).

The spelling of 20430440030 in words is "twenty billion, four hundred thirty million, four hundred forty thousand, thirty".