28353233 has 2 divisors, whose sum is σ = 28353234. Its totient is φ = 28353232.

The previous prime is 28353167. The next prime is 28353253. The reversal of 28353233 is 33235382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 11444689 = 4112^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 28353233 - 2⁸ = 28352977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28353196 and 28353205.

It is not a weakly prime, because it can be changed into another prime (28353253) 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, 14176616 + 14176617.

It is an arithmetic number, because the mean of its divisors is an integer number (14176617).

Almost surely, 2^28353233 is an apocalyptic number.

It is an amenable number.

28353233 is a deficient number, since it is larger than the sum of its proper divisors (1).

28353233 is an equidigital number, since it uses as much as digits as its factorization.

28353233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 28353233 is about 5324.7753943242. The cubic root of 28353233 is about 304.9304974660.

The spelling of 28353233 in words is "twenty-eight million, three hundred fifty-three thousand, two hundred thirty-three".