28606855 has 4 divisors (see below), whose sum is σ = 34328232. Its totient is φ = 22885480.

The previous prime is 28606849. The next prime is 28606861. The reversal of 28606855 is 55860682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55860682 = 2 ⋅27930341.

It is an interprime number because it is at equal distance from previous prime (28606849) and next prime (28606861).

It is not a de Polignac number, because 28606855 - 2⁷ = 28606727 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2860681 + ... + 2860690.

It is an arithmetic number, because the mean of its divisors is an integer number (8582058).

Almost surely, 2^28606855 is an apocalyptic number.

28606855 is a deficient number, since it is larger than the sum of its proper divisors (5721377).

28606855 is an equidigital number, since it uses as much as digits as its factorization.

28606855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721376.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 28606855 is about 5348.5376506107. The cubic root of 28606855 is about 305.8370093297.

The spelling of 28606855 in words is "twenty-eight million, six hundred six thousand, eight hundred fifty-five".