28606867 has 4 divisors (see below), whose sum is σ = 28666096. Its totient is φ = 28547640.

The previous prime is 28606861. The next prime is 28606891. The reversal of 28606867 is 76860682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76860682 = 2 ⋅38430341.

It is a cyclic number.

It is not a de Polignac number, because 28606867 - 2¹¹ = 28604819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28606861) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28884 + ... + 29857.

It is an arithmetic number, because the mean of its divisors is an integer number (7166524).

Almost surely, 2^28606867 is an apocalyptic number.

28606867 is a deficient number, since it is larger than the sum of its proper divisors (59229).

28606867 is an equidigital number, since it uses as much as digits as its factorization.

28606867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59228.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 28606867 is about 5348.5387724125. The cubic root of 28606867 is about 305.8370520938.

The spelling of 28606867 in words is "twenty-eight million, six hundred six thousand, eight hundred sixty-seven".