28288055 has 16 divisors (see below), whose sum is σ = 35942400. Its totient is φ = 21313440.

The previous prime is 28288037. The next prime is 28288067. The reversal of 28288055 is 55088282.

It is not a de Polignac number, because 28288055 - 2¹⁴ = 28271671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17366 + ... + 18924.

It is an arithmetic number, because the mean of its divisors is an integer number (2246400).

Almost surely, 2^28288055 is an apocalyptic number.

28288055 is a deficient number, since it is larger than the sum of its proper divisors (7654345).

28288055 is a wasteful number, since it uses less digits than its factorization.

28288055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774.

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 28288055 is about 5318.6516148362. The cubic root of 28288055 is about 304.6966615961.

The spelling of 28288055 in words is "twenty-eight million, two hundred eighty-eight thousand, fifty-five".