28727112733578 has 24 divisors (see below), whose sum is σ = 71133802959648. Its totient is φ = 8207746495272.

The previous prime is 28727112733519. The next prime is 28727112733597. The reversal of 28727112733578 is 87533721172782.

28727112733578 is a `hidden beast` number, since 2 + 8 + 7 + 2 + 7 + 1 + 1 + 27 + 33 + 578 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

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, 113996478976 + ... + 113996479227.

It is an arithmetic number, because the mean of its divisors is an integer number (2963908456652).

Almost surely, 2^{28727112733578} is an apocalyptic number.

28727112733578 is an abundant number, since it is smaller than the sum of its proper divisors (42406690226070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28727112733578 is a wasteful number, since it uses less digits than its factorization.

28727112733578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227992958218 (or 227992958215 counting only the distinct ones).

The product of its digits is 55319040, while the sum is 63.

The spelling of 28727112733578 in words is "twenty-eight trillion, seven hundred twenty-seven billion, one hundred twelve million, seven hundred thirty-three thousand, five hundred seventy-eight".