28275203 has 16 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 24612000.

The previous prime is 28275179. The next prime is 28275223. The reversal of 28275203 is 30257282.

It is a cyclic number.

It is not a de Polignac number, because 28275203 - 2¹⁴ = 28258819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28275223) by changing a digit.

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, 47876 + ... + 48462.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^28275203 is an apocalyptic number.

28275203 is a deficient number, since it is larger than the sum of its proper divisors (3900157).

28275203 is a wasteful number, since it uses less digits than its factorization.

28275203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28275203 is about 5317.4432766133. The cubic root of 28275203 is about 304.6505107303.

The spelling of 28275203 in words is "twenty-eight million, two hundred seventy-five thousand, two hundred three".