28684363 has 2 divisors, whose sum is σ = 28684364. Its totient is φ = 28684362.

The previous prime is 28684349. The next prime is 28684387. The reversal of 28684363 is 36348682.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28684363 is a prime.

It is not a weakly prime, because it can be changed into another prime (28684333) 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, 14342181 + 14342182.

It is an arithmetic number, because the mean of its divisors is an integer number (14342182).

Almost surely, 2^28684363 is an apocalyptic number.

28684363 is a deficient number, since it is larger than the sum of its proper divisors (1).

28684363 is an equidigital number, since it uses as much as digits as its factorization.

28684363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The square root of 28684363 is about 5355.7784681594. The cubic root of 28684363 is about 306.1129739346.

The spelling of 28684363 in words is "twenty-eight million, six hundred eighty-four thousand, three hundred sixty-three".