28255255 has 16 divisors (see below), whose sum is σ = 39138624. Its totient is φ = 19180800.

The previous prime is 28255237. The next prime is 28255267. The reversal of 28255255 is 55255282.

It is a happy number.

It is not a de Polignac number, because 28255255 - 2⁷ = 28255127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28255255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (2446164).

Almost surely, 2^28255255 is an apocalyptic number.

28255255 is a deficient number, since it is larger than the sum of its proper divisors (10883369).

28255255 is a wasteful number, since it uses less digits than its factorization.

28255255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106.

The product of its digits is 40000, while the sum is 34.

The square root of 28255255 is about 5315.5672321964. The cubic root of 28255255 is about 304.5788507900.

The spelling of 28255255 in words is "twenty-eight million, two hundred fifty-five thousand, two hundred fifty-five".