28157575608 has 24 divisors (see below), whose sum is σ = 76260100800. Its totient is φ = 9385858512.

The previous prime is 28157575561. The next prime is 28157575627. The reversal of 28157575608 is 80657575182.

28157575608 is a `hidden beast` number, since 2 + 8 + 1 + 5 + 7 + 575 + 60 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195538648 + ... + 195538791.

It is an arithmetic number, because the mean of its divisors is an integer number (3177504200).

Almost surely, 2^28157575608 is an apocalyptic number.

It is an amenable number.

28157575608 is an abundant number, since it is smaller than the sum of its proper divisors (48102525192).

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

28157575608 is a wasteful number, since it uses less digits than its factorization.

28157575608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391077451 (or 391077444 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 54.

The spelling of 28157575608 in words is "twenty-eight billion, one hundred fifty-seven million, five hundred seventy-five thousand, six hundred eight".