28554242873 has 12 divisors (see below), whose sum is σ = 30953136060. Its totient is φ = 26329245696.

The previous prime is 28554242861. The next prime is 28554242903. The reversal of 28554242873 is 37824245582.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13236962704 + 15317280169 = 115052^2 + 123763^2 .

It is not a de Polignac number, because 28554242873 - 2⁸ = 28554242617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28554242813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66065 + ... + 247937.

It is an arithmetic number, because the mean of its divisors is an integer number (2579428005).

Almost surely, 2^28554242873 is an apocalyptic number.

It is an amenable number.

28554242873 is a deficient number, since it is larger than the sum of its proper divisors (2398893187).

28554242873 is a wasteful number, since it uses less digits than its factorization.

28554242873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182828 (or 182815 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 50.

The spelling of 28554242873 in words is "twenty-eight billion, five hundred fifty-four million, two hundred forty-two thousand, eight hundred seventy-three".