28456932926017 has 12 divisors (see below), whose sum is σ = 29473034604156. Its totient is φ = 27474735404480.

The previous prime is 28456932926011. The next prime is 28456932926027. The reversal of 28456932926017 is 71062923965482.

It is a Cunningham number, because it is equal to 5334504²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 67633284096 + 28389299641921 = 260064^2 + 5328161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28456932926017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28456932926017.

It is not an unprimeable number, because it can be changed into a prime (28456932926011) 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, 25144767 + ... + 26252107.

It is an arithmetic number, because the mean of its divisors is an integer number (2456086217013).

It is a 1-persistent number, because it is pandigital, but 2⋅28456932926017 = 56913865852034 is not.

Almost surely, 2^{28456932926017} is an apocalyptic number.

It is an amenable number.

28456932926017 is a deficient number, since it is larger than the sum of its proper divisors (1016101678139).

28456932926017 is a wasteful number, since it uses less digits than its factorization.

28456932926017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137956 (or 1137927 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 28456932926017 in words is "twenty-eight trillion, four hundred fifty-six billion, nine hundred thirty-two million, nine hundred twenty-six thousand, seventeen".