28858133 has 2 divisors, whose sum is σ = 28858134. Its totient is φ = 28858132.

The previous prime is 28858111. The next prime is 28858157. The reversal of 28858133 is 33185882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 12802084 = 4007^2 + 3578^2 .

It is a cyclic number.

It is not a de Polignac number, because 28858133 - 2⁶ = 28858069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28858733) 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, 14429066 + 14429067.

It is an arithmetic number, because the mean of its divisors is an integer number (14429067).

Almost surely, 2^28858133 is an apocalyptic number.

It is an amenable number.

28858133 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858133 is an equidigital number, since it uses as much as digits as its factorization.

28858133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 38.

The square root of 28858133 is about 5371.9766380728. The cubic root of 28858133 is about 306.7298744686.

The spelling of 28858133 in words is "twenty-eight million, eight hundred fifty-eight thousand, one hundred thirty-three".