28228417065 has 24 divisors (see below), whose sum is σ = 49548620160. Its totient is φ = 14864582304.

The previous prime is 28228416961. The next prime is 28228417163. The reversal of 28228417065 is 56071482282.

28228417065 is a `hidden beast` number, since 2 + 8 + 228 + 417 + 0 + 6 + 5 = 666.

It is not a de Polignac number, because 28228417065 - 2⁹ = 28228416553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28228417065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3966687 + ... + 3973796.

It is an arithmetic number, because the mean of its divisors is an integer number (2064525840).

Almost surely, 2^28228417065 is an apocalyptic number.

It is an amenable number.

28228417065 is a deficient number, since it is larger than the sum of its proper divisors (21320203095).

28228417065 is a wasteful number, since it uses less digits than its factorization.

28228417065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940573 (or 7940570 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28228417065 in words is "twenty-eight billion, two hundred twenty-eight million, four hundred seventeen thousand, sixty-five".