20502424432 has 20 divisors (see below), whose sum is σ = 45398225776. Its totient is φ = 8786753280.

The previous prime is 20502424409. The next prime is 20502424447. The reversal of 20502424432 is 23442420502.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20502424432.

It is a congruent number.

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, 91528569 + ... + 91528792.

Almost surely, 2^20502424432 is an apocalyptic number.

It is an amenable number.

20502424432 is an abundant number, since it is smaller than the sum of its proper divisors (24895801344).

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

20502424432 is a wasteful number, since it uses less digits than its factorization.

20502424432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183057376 (or 183057370 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 20502424432 its reverse (23442420502), we get a palindrome (43944844934).

The spelling of 20502424432 in words is "twenty billion, five hundred two million, four hundred twenty-four thousand, four hundred thirty-two".