28086417 has 6 divisors (see below), whose sum is σ = 40569282. Its totient is φ = 18724272.

The previous prime is 28086391. The next prime is 28086433. The reversal of 28086417 is 71468082.

28086417 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 641 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 112896 = 5289^2 + 336^2 .

It is not a de Polignac number, because 28086417 - 2²⁴ = 11309201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28086017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1560348 + ... + 1560365.

It is an arithmetic number, because the mean of its divisors is an integer number (6761547).

Almost surely, 2^28086417 is an apocalyptic number.

It is an amenable number.

28086417 is a deficient number, since it is larger than the sum of its proper divisors (12482865).

28086417 is a wasteful number, since it uses less digits than its factorization.

28086417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120719 (or 3120716 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28086417 is about 5299.6619703524. The cubic root of 28086417 is about 303.9709726728.

The spelling of 28086417 in words is "twenty-eight million, eighty-six thousand, four hundred seventeen".