28703664872 has 16 divisors (see below), whose sum is σ = 53822862240. Its totient is φ = 14350901616.

The previous prime is 28703664851. The next prime is 28703664883. The reversal of 28703664872 is 27846630782.

It is a happy 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, 24773 + ... + 240875.

It is an arithmetic number, because the mean of its divisors is an integer number (3363928890).

Almost surely, 2^28703664872 is an apocalyptic number.

It is an amenable number.

28703664872 is a deficient number, since it is larger than the sum of its proper divisors (25119197368).

28703664872 is a wasteful number, since it uses less digits than its factorization.

28703664872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232712 (or 232708 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 28703664872 in words is "twenty-eight billion, seven hundred three million, six hundred sixty-four thousand, eight hundred seventy-two".