28272203 has 2 divisors, whose sum is σ = 28272204. Its totient is φ = 28272202.

The previous prime is 28272193. The next prime is 28272259. The reversal of 28272203 is 30227282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28272203 - 2¹⁰ = 28271179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28272103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14136101 + 14136102.

It is an arithmetic number, because the mean of its divisors is an integer number (14136102).

Almost surely, 2^28272203 is an apocalyptic number.

28272203 is a deficient number, since it is larger than the sum of its proper divisors (1).

28272203 is an equidigital number, since it uses as much as digits as its factorization.

28272203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 28272203 is about 5317.1611786742. The cubic root of 28272203 is about 304.6397358728.

Adding to 28272203 its reverse (30227282), we get a palindrome (58499485).

The spelling of 28272203 in words is "twenty-eight million, two hundred seventy-two thousand, two hundred three".