28642808079 has 12 divisors (see below), whose sum is σ = 41452362432. Its totient is φ = 19058551200.

The previous prime is 28642808069. The next prime is 28642808093. The reversal of 28642808079 is 97080824682.

28642808079 is a `hidden beast` number, since 286 + 4 + 280 + 80 + 7 + 9 = 666.

It is not a de Polignac number, because 28642808079 - 2⁷ = 28642807951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28642808069) 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 11 ways as a sum of consecutive naturals, for example, 3049567 + ... + 3058944.

It is an arithmetic number, because the mean of its divisors is an integer number (3454363536).

Almost surely, 2^28642808079 is an apocalyptic number.

28642808079 is a deficient number, since it is larger than the sum of its proper divisors (12809554353).

28642808079 is a wasteful number, since it uses less digits than its factorization.

28642808079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109038 (or 6109035 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 28642808079 in words is "twenty-eight billion, six hundred forty-two million, eight hundred eight thousand, seventy-nine".