28000431017648 has 20 divisors (see below), whose sum is σ = 54250973645520. Its totient is φ = 14000179754304.

The previous prime is 28000431017623. The next prime is 28000431017731. The reversal of 28000431017648 is 84671013400082.

It is a junction number, because it is equal to n+sod(n) for n = 28000431017599 and 28000431017608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4920386 + ... + 8956062.

It is an arithmetic number, because the mean of its divisors is an integer number (2712548682276).

Almost surely, 2^{28000431017648} is an apocalyptic number.

It is an amenable number.

28000431017648 is a deficient number, since it is larger than the sum of its proper divisors (26250542627872).

28000431017648 is a wasteful number, since it uses less digits than its factorization.

28000431017648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469324 (or 4469318 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 28000431017648 in words is "twenty-eight trillion, four hundred thirty-one million, seventeen thousand, six hundred forty-eight".