28708484711091 has 8 divisors (see below), whose sum is σ = 38304879114240. Its totient is φ = 19125540057672.

The previous prime is 28708484711063. The next prime is 28708484711129. The reversal of 28708484711091 is 19011748480782.

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

It is not a de Polignac number, because 28708484711091 - 2¹⁷ = 28708484580019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28708484711021) 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 7 ways as a sum of consecutive naturals, for example, 3362432451 + ... + 3362440988.

It is an arithmetic number, because the mean of its divisors is an integer number (4788109889280).

Almost surely, 2^{28708484711091} is an apocalyptic number.

28708484711091 is a deficient number, since it is larger than the sum of its proper divisors (9596394403149).

28708484711091 is a wasteful number, since it uses less digits than its factorization.

28708484711091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724874865.

The product of its (nonzero) digits is 7225344, while the sum is 60.

The spelling of 28708484711091 in words is "twenty-eight trillion, seven hundred eight billion, four hundred eighty-four million, seven hundred eleven thousand, ninety-one".