28871604763 has 4 divisors (see below), whose sum is σ = 28886137000. Its totient is φ = 28857072528.

The previous prime is 28871604757. The next prime is 28871604799. The reversal of 28871604763 is 36740617882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28871604763 - 2¹³ = 28871596571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28871604763.

It is not an unprimeable number, because it can be changed into a prime (28871608763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7263138 + ... + 7267111.

It is an arithmetic number, because the mean of its divisors is an integer number (7221534250).

Almost surely, 2^28871604763 is an apocalyptic number.

28871604763 is a deficient number, since it is larger than the sum of its proper divisors (14532237).

28871604763 is a wasteful number, since it uses less digits than its factorization.

28871604763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14532236.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 28871604763 in words is "twenty-eight billion, eight hundred seventy-one million, six hundred four thousand, seven hundred sixty-three".