28532227 has 2 divisors, whose sum is σ = 28532228. Its totient is φ = 28532226.

The previous prime is 28532191. The next prime is 28532233. The reversal of 28532227 is 72223582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28532227 - 2⁷ = 28532099 is a prime.

It is not a weakly prime, because it can be changed into another prime (28532237) 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 as a sum of consecutive naturals, namely, 14266113 + 14266114.

It is an arithmetic number, because the mean of its divisors is an integer number (14266114).

Almost surely, 2^28532227 is an apocalyptic number.

28532227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28532227 is an equidigital number, since it uses as much as digits as its factorization.

28532227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 28532227 is about 5341.5566083306. The cubic root of 28532227 is about 305.5708274363.

The spelling of 28532227 in words is "twenty-eight million, five hundred thirty-two thousand, two hundred twenty-seven".