20440304432 has 20 divisors (see below), whose sum is σ = 39697172016. Its totient is φ = 10195872960.

The previous prime is 20440304419. The next prime is 20440304459. The reversal of 20440304432 is 23440304402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510508 + ... + 1523979.

Almost surely, 2^20440304432 is an apocalyptic number.

It is an amenable number.

20440304432 is a deficient number, since it is larger than the sum of its proper divisors (19256867584).

20440304432 is a wasteful number, since it uses less digits than its factorization.

20440304432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034916 (or 3034910 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20440304432 its reverse (23440304402), we get a palindrome (43880608834).

The spelling of 20440304432 in words is "twenty billion, four hundred forty million, three hundred four thousand, four hundred thirty-two".