28583189 has 2 divisors, whose sum is σ = 28583190. Its totient is φ = 28583188.

The previous prime is 28583173. The next prime is 28583207. The reversal of 28583189 is 98138582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 46225 = 5342^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 28583189 - 2⁴ = 28583173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28583119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14291594 + 14291595.

It is an arithmetic number, because the mean of its divisors is an integer number (14291595).

Almost surely, 2^28583189 is an apocalyptic number.

It is an amenable number.

28583189 is a deficient number, since it is larger than the sum of its proper divisors (1).

28583189 is an equidigital number, since it uses as much as digits as its factorization.

28583189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 28583189 is about 5346.3248124296. The cubic root of 28583189 is about 305.7526480169.

The spelling of 28583189 in words is "twenty-eight million, five hundred eighty-three thousand, one hundred eighty-nine".