28061333 has 2 divisors, whose sum is σ = 28061334. Its totient is φ = 28061332.

The previous prime is 28061323. The next prime is 28061351. The reversal of 28061333 is 33316082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 2427364 = 5063^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 28061333 - 2¹⁰ = 28060309 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 (28061323) 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, 14030666 + 14030667.

It is an arithmetic number, because the mean of its divisors is an integer number (14030667).

Almost surely, 2^28061333 is an apocalyptic number.

It is an amenable number.

28061333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28061333 is an equidigital number, since it uses as much as digits as its factorization.

28061333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 28061333 is about 5297.2948756889. The cubic root of 28061333 is about 303.8804534856.

The spelling of 28061333 in words is "twenty-eight million, sixty-one thousand, three hundred thirty-three".