28070175728 has 40 divisors (see below), whose sum is σ = 62291510112. Its totient is φ = 12003729408.

The previous prime is 28070175701. The next prime is 28070175733. The reversal of 28070175728 is 82757107082.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 223025 + ... + 325392.

Almost surely, 2^28070175728 is an apocalyptic number.

28070175728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28070175728 is an abundant number, since it is smaller than the sum of its proper divisors (34221334384).

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

28070175728 is a wasteful number, since it uses less digits than its factorization.

28070175728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548889 (or 548883 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 28070175728 in words is "twenty-eight billion, seventy million, one hundred seventy-five thousand, seven hundred twenty-eight".