28708591448 has 16 divisors (see below), whose sum is σ = 54565988280. Its totient is φ = 14157661248.

The previous prime is 28708591361. The next prime is 28708591459. The reversal of 28708591448 is 84419580782.

It is a junction number, because it is equal to n+sod(n) for n = 28708591393 and 28708591402.

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 3 ways as a sum of consecutive naturals, for example, 24578690 + ... + 24579857.

Almost surely, 2^28708591448 is an apocalyptic number.

It is an amenable number.

28708591448 is a deficient number, since it is larger than the sum of its proper divisors (25857396832).

28708591448 is a wasteful number, since it uses less digits than its factorization.

28708591448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49158626 (or 49158622 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 28708591448 in words is "twenty-eight billion, seven hundred eight million, five hundred ninety-one thousand, four hundred forty-eight".