28175906672 has 40 divisors (see below), whose sum is σ = 55943044416. Its totient is φ = 13741043456.

The previous prime is 28175906663. The next prime is 28175906687. The reversal of 28175906672 is 27660957182.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 156398 + ... + 284274.

Almost surely, 2^28175906672 is an apocalyptic number.

It is an amenable number.

28175906672 is a deficient number, since it is larger than the sum of its proper divisors (27767137744).

28175906672 is a wasteful number, since it uses less digits than its factorization.

28175906672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128225 (or 128219 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 28175906672 in words is "twenty-eight billion, one hundred seventy-five million, nine hundred six thousand, six hundred seventy-two".