28333243 has 2 divisors, whose sum is σ = 28333244. Its totient is φ = 28333242.

The previous prime is 28333229. The next prime is 28333267. The reversal of 28333243 is 34233382.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28333243 is a prime.

It is not a weakly prime, because it can be changed into another prime (28333213) 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, 14166621 + 14166622.

It is an arithmetic number, because the mean of its divisors is an integer number (14166622).

Almost surely, 2^28333243 is an apocalyptic number.

28333243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28333243 is an equidigital number, since it uses as much as digits as its factorization.

28333243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 28.

The square root of 28333243 is about 5322.8979888779. The cubic root of 28333243 is about 304.8588184711.

The spelling of 28333243 in words is "twenty-eight million, three hundred thirty-three thousand, two hundred forty-three".