28157684075 has 12 divisors (see below), whose sum is σ = 34991281248. Its totient is φ = 22477274400.

The previous prime is 28157684063. The next prime is 28157684081. The reversal of 28157684075 is 57048675182.

It is not a de Polignac number, because 28157684075 - 2⁸ = 28157683819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1210067 + ... + 1233116.

It is an arithmetic number, because the mean of its divisors is an integer number (2915940104).

Almost surely, 2^28157684075 is an apocalyptic number.

28157684075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28157684075 is a deficient number, since it is larger than the sum of its proper divisors (6833597173).

28157684075 is a wasteful number, since it uses less digits than its factorization.

28157684075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443654 (or 2443649 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 28157684075 in words is "twenty-eight billion, one hundred fifty-seven million, six hundred eighty-four thousand, seventy-five".