28757364771 has 4 divisors (see below), whose sum is σ = 38343153032. Its totient is φ = 19171576512.

The previous prime is 28757364731. The next prime is 28757364841. The reversal of 28757364771 is 17746375782.

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

It is not a de Polignac number, because 28757364771 - 2³⁰ = 27683622947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28757364721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4792894126 + ... + 4792894131.

It is an arithmetic number, because the mean of its divisors is an integer number (9585788258).

Almost surely, 2^28757364771 is an apocalyptic number.

28757364771 is a deficient number, since it is larger than the sum of its proper divisors (9585788261).

28757364771 is an equidigital number, since it uses as much as digits as its factorization.

28757364771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9585788260.

The product of its digits is 13829760, while the sum is 57.

The spelling of 28757364771 in words is "twenty-eight billion, seven hundred fifty-seven million, three hundred sixty-four thousand, seven hundred seventy-one".