28445056679672 has 32 divisors (see below), whose sum is σ = 56472841299600. Its totient is φ = 13385663076864.

The previous prime is 28445056679659. The next prime is 28445056679707. The reversal of 28445056679672 is 27697665054482.

It is a junction number, because it is equal to n+sod(n) for n = 28445056679596 and 28445056679605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5615918 + ... + 9403650.

Almost surely, 2^{28445056679672} is an apocalyptic number.

It is an amenable number.

28445056679672 is a deficient number, since it is larger than the sum of its proper divisors (28027784619928).

28445056679672 is a wasteful number, since it uses less digits than its factorization.

28445056679672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842975 (or 3842971 counting only the distinct ones).

The product of its (nonzero) digits is 1219276800, while the sum is 71.

The spelling of 28445056679672 in words is "twenty-eight trillion, four hundred forty-five billion, fifty-six million, six hundred seventy-nine thousand, six hundred seventy-two".