28432605636 has 48 divisors (see below), whose sum is σ = 73731295680. Its totient is φ = 9475332480.

The previous prime is 28432605623. The next prime is 28432605653. The reversal of 28432605636 is 63650623482.

It is a happy number.

28432605636 is a `hidden beast` number, since 2 + 8 + 4 + 3 + 2 + 6 + 0 + 5 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28432605591 and 28432605600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474691 + ... + 531221.

It is an arithmetic number, because the mean of its divisors is an integer number (1536068660).

Almost surely, 2^28432605636 is an apocalyptic number.

It is an amenable number.

28432605636 is an abundant number, since it is smaller than the sum of its proper divisors (45298690044).

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

28432605636 is a wasteful number, since it uses less digits than its factorization.

28432605636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61201 (or 61193 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 28432605636 in words is "twenty-eight billion, four hundred thirty-two million, six hundred five thousand, six hundred thirty-six".