28086855 has 16 divisors (see below), whose sum is σ = 45010944. Its totient is φ = 14955680.

The previous prime is 28086853. The next prime is 28086857. The reversal of 28086855 is 55868082.

It is an interprime number because it is at equal distance from previous prime (28086853) and next prime (28086857).

It is not a de Polignac number, because 28086855 - 2¹ = 28086853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28086853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12250 + ... + 14360.

It is an arithmetic number, because the mean of its divisors is an integer number (2813184).

Almost surely, 2^28086855 is an apocalyptic number.

28086855 is a deficient number, since it is larger than the sum of its proper divisors (16924089).

28086855 is a wasteful number, since it uses less digits than its factorization.

28086855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 28086855 is about 5299.7032935816. The cubic root of 28086855 is about 303.9725527793.

The spelling of 28086855 in words is "twenty-eight million, eighty-six thousand, eight hundred fifty-five".