28064255 has 16 divisors (see below), whose sum is σ = 35308224. Its totient is φ = 21373440.

The previous prime is 28064249. The next prime is 28064287. The reversal of 28064255 is 55246082.

It is not a de Polignac number, because 28064255 - 2⁶ = 28064191 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31415 + ... + 32295.

It is an arithmetic number, because the mean of its divisors is an integer number (2206764).

Almost surely, 2^28064255 is an apocalyptic number.

28064255 is a deficient number, since it is larger than the sum of its proper divisors (7243969).

28064255 is a wasteful number, since it uses less digits than its factorization.

28064255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 28064255 is about 5297.5706696560. The cubic root of 28064255 is about 303.8910007140.

The spelling of 28064255 in words is "twenty-eight million, sixty-four thousand, two hundred fifty-five".