28112328873 has 24 divisors (see below), whose sum is σ = 40802386560. Its totient is φ = 18651336480.

The previous prime is 28112328863. The next prime is 28112328877. The reversal of 28112328873 is 37882321182.

28112328873 is a `hidden beast` number, since 281 + 1 + 23 + 288 + 73 = 666.

It is not a de Polignac number, because 28112328873 - 2⁴ = 28112328857 is a prime.

It is a super-3 number, since 3×28112328873³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28112328877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4580715 + ... + 4586847.

It is an arithmetic number, because the mean of its divisors is an integer number (1700099440).

Almost surely, 2^28112328873 is an apocalyptic number.

It is an amenable number.

28112328873 is a deficient number, since it is larger than the sum of its proper divisors (12690057687).

28112328873 is a wasteful number, since it uses less digits than its factorization.

28112328873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509 (or 8506 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 28112328873 in words is "twenty-eight billion, one hundred twelve million, three hundred twenty-eight thousand, eight hundred seventy-three".