28865765708 has 24 divisors (see below), whose sum is σ = 55212826032. Its totient is φ = 13123813824.

The previous prime is 28865765707. The next prime is 28865765771. The reversal of 28865765708 is 80756756882.

It is not an unprimeable number, because it can be changed into a prime (28865765707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139135 + ... + 4146102.

It is an arithmetic number, because the mean of its divisors is an integer number (2300534418).

Almost surely, 2^28865765708 is an apocalyptic number.

It is an amenable number.

28865765708 is a deficient number, since it is larger than the sum of its proper divisors (26347060324).

28865765708 is a wasteful number, since it uses less digits than its factorization.

28865765708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285321 (or 8285319 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 28865765708 in words is "twenty-eight billion, eight hundred sixty-five million, seven hundred sixty-five thousand, seven hundred eight".