28303255 has 16 divisors (see below), whose sum is σ = 35935200. Its totient is φ = 21340800.

The previous prime is 28303237. The next prime is 28303273. The reversal of 28303255 is 55230382.

It is an interprime number because it is at equal distance from previous prime (28303237) and next prime (28303273).

It is not a de Polignac number, because 28303255 - 2⁷ = 28303127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21105 + ... + 22405.

It is an arithmetic number, because the mean of its divisors is an integer number (2245950).

Almost surely, 2^28303255 is an apocalyptic number.

28303255 is a deficient number, since it is larger than the sum of its proper divisors (7631945).

28303255 is a wasteful number, since it uses less digits than its factorization.

28303255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 28303255 is about 5320.0803565360. The cubic root of 28303255 is about 304.7512259694.

The spelling of 28303255 in words is "twenty-eight million, three hundred three thousand, two hundred fifty-five".