28307752811 has 8 divisors (see below), whose sum is σ = 31133895744. Its totient is φ = 25574270400.

The previous prime is 28307752801. The next prime is 28307752843. The reversal of 28307752811 is 11825770382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28307752811 - 2¹⁸ = 28307490667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28307752801) 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, 23164490 + ... + 23165711.

It is an arithmetic number, because the mean of its divisors is an integer number (3891736968).

Almost surely, 2^28307752811 is an apocalyptic number.

28307752811 is a deficient number, since it is larger than the sum of its proper divisors (2826142933).

28307752811 is a wasteful number, since it uses less digits than its factorization.

28307752811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46330261.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 28307752811 in words is "twenty-eight billion, three hundred seven million, seven hundred fifty-two thousand, eight hundred eleven".