28107872858 has 32 divisors (see below), whose sum is σ = 45950284800. Its totient is φ = 12817995840.

The previous prime is 28107872857. The next prime is 28107872869. The reversal of 28107872858 is 85827870182.

It is a super-3 number, since 3×28107872858³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28107872857) 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, 720941 + ... + 758927.

It is an arithmetic number, because the mean of its divisors is an integer number (1435946400).

Almost surely, 2^28107872858 is an apocalyptic number.

28107872858 is a deficient number, since it is larger than the sum of its proper divisors (17842411942).

28107872858 is a wasteful number, since it uses less digits than its factorization.

28107872858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38342.

The product of its (nonzero) digits is 4014080, while the sum is 56.

The spelling of 28107872858 in words is "twenty-eight billion, one hundred seven million, eight hundred seventy-two thousand, eight hundred fifty-eight".