28719833 has 2 divisors, whose sum is σ = 28719834. Its totient is φ = 28719832.

The previous prime is 28719827. The next prime is 28719871. The reversal of 28719833 is 33891782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17875984 + 10843849 = 4228^2 + 3293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28719833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28719233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14359916 + 14359917.

It is an arithmetic number, because the mean of its divisors is an integer number (14359917).

Almost surely, 2^28719833 is an apocalyptic number.

It is an amenable number.

28719833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28719833 is an equidigital number, since it uses as much as digits as its factorization.

28719833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 28719833 is about 5359.0888218054. The cubic root of 28719833 is about 306.2390978765.

The spelling of 28719833 in words is "twenty-eight million, seven hundred nineteen thousand, eight hundred thirty-three".