20442240232 has 16 divisors (see below), whose sum is σ = 38978848800. Its totient is φ = 10047880560.

The previous prime is 20442240229. The next prime is 20442240283. The reversal of 20442240232 is 23204224402.

It is a junction number, because it is equal to n+sod(n) for n = 20442240197 and 20442240206.

It is an unprimeable number.

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, 21654444 + ... + 21655387.

It is an arithmetic number, because the mean of its divisors is an integer number (2436178050).

Almost surely, 2^20442240232 is an apocalyptic number.

It is an amenable number.

20442240232 is a deficient number, since it is larger than the sum of its proper divisors (18536608568).

20442240232 is a wasteful number, since it uses less digits than its factorization.

20442240232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43309896 (or 43309892 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 20442240232 its reverse (23204224402), we get a palindrome (43646464634).

The spelling of 20442240232 in words is "twenty billion, four hundred forty-two million, two hundred forty thousand, two hundred thirty-two".