28017691682972 has 24 divisors (see below), whose sum is σ = 49142508027984. Its totient is φ = 13977010818432.

The previous prime is 28017691682933. The next prime is 28017691682989. The reversal of 28017691682972 is 27928619671082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324913 + ... + 7602024.

It is an arithmetic number, because the mean of its divisors is an integer number (2047604501166).

Almost surely, 2^{28017691682972} is an apocalyptic number.

It is an amenable number.

28017691682972 is a deficient number, since it is larger than the sum of its proper divisors (21124816345012).

28017691682972 is a wasteful number, since it uses less digits than its factorization.

28017691682972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928725 (or 8928723 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 68.

The spelling of 28017691682972 in words is "twenty-eight trillion, seventeen billion, six hundred ninety-one million, six hundred eighty-two thousand, nine hundred seventy-two".