28516745 has 8 divisors (see below), whose sum is σ = 35324160. Its totient is φ = 22077360.

The previous prime is 28516727. The next prime is 28516759. The reversal of 28516745 is 54761582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28516745 - 2⁶ = 28516681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28516699 and 28516708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91835 + ... + 92144.

It is an arithmetic number, because the mean of its divisors is an integer number (4415520).

Almost surely, 2^28516745 is an apocalyptic number.

It is an amenable number.

28516745 is a deficient number, since it is larger than the sum of its proper divisors (6807415).

28516745 is a wasteful number, since it uses less digits than its factorization.

28516745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184015.

The product of its digits is 67200, while the sum is 38.

The square root of 28516745 is about 5340.1072086616. The cubic root of 28516745 is about 305.5155483830.

The spelling of 28516745 in words is "twenty-eight million, five hundred sixteen thousand, seven hundred forty-five".