20442440232 has 32 divisors (see below), whose sum is σ = 56784556800. Its totient is φ = 6814146672.

The previous prime is 20442440219. The next prime is 20442440237. The reversal of 20442440232 is 23204424402.

20442440232 is a `hidden beast` number, since 2 + 0 + 4 + 424 + 4 + 0 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20442440196 and 20442440205.

It is not an unprimeable number, because it can be changed into a prime (20442440237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47320248 + ... + 47320679.

It is an arithmetic number, because the mean of its divisors is an integer number (1774517400).

Almost surely, 2^20442440232 is an apocalyptic number.

It is an amenable number.

20442440232 is an abundant number, since it is smaller than the sum of its proper divisors (36342116568).

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

20442440232 is a wasteful number, since it uses less digits than its factorization.

20442440232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94640942 (or 94640932 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20442440232 its reverse (23204424402), we get a palindrome (43646864634).

The spelling of 20442440232 in words is "twenty billion, four hundred forty-two million, four hundred forty thousand, two hundred thirty-two".