28327765798 has 32 divisors (see below), whose sum is σ = 45379952640. Its totient is φ = 13224254400.

The previous prime is 28327765777. The next prime is 28327765799. The reversal of 28327765798 is 89756772382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28327765799) 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 15 ways as a sum of consecutive naturals, for example, 709290 + ... + 748162.

It is an arithmetic number, because the mean of its divisors is an integer number (1418123520).

Almost surely, 2^28327765798 is an apocalyptic number.

28327765798 is a deficient number, since it is larger than the sum of its proper divisors (17052186842).

28327765798 is a wasteful number, since it uses less digits than its factorization.

28327765798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39172.

The product of its digits is 71124480, while the sum is 64.

The spelling of 28327765798 in words is "twenty-eight billion, three hundred twenty-seven million, seven hundred sixty-five thousand, seven hundred ninety-eight".