28793333 has 2 divisors, whose sum is σ = 28793334. Its totient is φ = 28793332.

The previous prime is 28793321. The next prime is 28793339. The reversal of 28793333 is 33339782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 9591409 = 4382^2 + 3097^2 .

It is a cyclic number.

It is not a de Polignac number, because 28793333 - 2⁸ = 28793077 is a prime.

It is a Chen prime.

28793333 is a modest number, since divided by 3333 gives 2879 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28793339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14396666 + 14396667.

It is an arithmetic number, because the mean of its divisors is an integer number (14396667).

Almost surely, 2^28793333 is an apocalyptic number.

It is an amenable number.

28793333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28793333 is an equidigital number, since it uses as much as digits as its factorization.

28793333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 38.

The square root of 28793333 is about 5365.9419489965. The cubic root of 28793333 is about 306.5001184238.

The spelling of 28793333 in words is "twenty-eight million, seven hundred ninety-three thousand, three hundred thirty-three".