28557276273 has 16 divisors (see below), whose sum is σ = 42309725440. Its totient is φ = 19036991952.

The previous prime is 28557276269. The next prime is 28557276359. The reversal of 28557276273 is 37267275582.

28557276273 is a `hidden beast` number, since 2 + 8 + 5 + 5 + 7 + 2 + 7 + 627 + 3 = 666.

It is not a de Polignac number, because 28557276273 - 2² = 28557276269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28557276263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705615 + ... + 744987.

It is an arithmetic number, because the mean of its divisors is an integer number (2644357840).

Almost surely, 2^28557276273 is an apocalyptic number.

It is an amenable number.

28557276273 is a deficient number, since it is larger than the sum of its proper divisors (13752449167).

28557276273 is a wasteful number, since it uses less digits than its factorization.

28557276273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66245 (or 66239 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 28557276273 in words is "twenty-eight billion, five hundred fifty-seven million, two hundred seventy-six thousand, two hundred seventy-three".