28055065 has 16 divisors (see below), whose sum is σ = 34856640. Its totient is φ = 21660480.

The previous prime is 28055057. The next prime is 28055119. The reversal of 28055065 is 56055082.

It is not a de Polignac number, because 28055065 - 2³ = 28055057 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 25170 + ... + 26260.

It is an arithmetic number, because the mean of its divisors is an integer number (2178540).

Almost surely, 2^28055065 is an apocalyptic number.

It is an amenable number.

28055065 is a deficient number, since it is larger than the sum of its proper divisors (6801575).

28055065 is a wasteful number, since it uses less digits than its factorization.

28055065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 28055065 is about 5296.7032199284. The cubic root of 28055065 is about 303.8578260916.

The spelling of 28055065 in words is "twenty-eight million, fifty-five thousand, sixty-five".