28275278313 has 16 divisors (see below), whose sum is σ = 39016615680. Its totient is φ = 18192604416.

The previous prime is 28275278303. The next prime is 28275278327. The reversal of 28275278313 is 31387257282.

It is not a de Polignac number, because 28275278313 - 2⁹ = 28275277801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28275278303) 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, 146481 + ... + 279297.

It is an arithmetic number, because the mean of its divisors is an integer number (2438538480).

Almost surely, 2^28275278313 is an apocalyptic number.

It is an amenable number.

28275278313 is a deficient number, since it is larger than the sum of its proper divisors (10741337367).

28275278313 is a wasteful number, since it uses less digits than its factorization.

28275278313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135296.

The product of its digits is 1128960, while the sum is 48.

The spelling of 28275278313 in words is "twenty-eight billion, two hundred seventy-five million, two hundred seventy-eight thousand, three hundred thirteen".