20430440032 has 24 divisors (see below), whose sum is σ = 40255394256. Its totient is φ = 10206847872.

The previous prime is 20430440027. The next prime is 20430440039. The reversal of 20430440032 is 23004403402.

It is a super-2 number, since 2×20430440032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20430439985 and 20430440012.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221883 + ... + 300154.

It is an arithmetic number, because the mean of its divisors is an integer number (1677308094).

Almost surely, 2^20430440032 is an apocalyptic number.

It is an amenable number.

20430440032 is a deficient number, since it is larger than the sum of its proper divisors (19824954224).

20430440032 is a wasteful number, since it uses less digits than its factorization.

20430440032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523270 (or 523262 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20430440032 its reverse (23004403402), we get a palindrome (43434843434).

The spelling of 20430440032 in words is "twenty billion, four hundred thirty million, four hundred forty thousand, thirty-two".