28133603 has 2 divisors, whose sum is σ = 28133604. Its totient is φ = 28133602.

The previous prime is 28133593. The next prime is 28133621. The reversal of 28133603 is 30633182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28133603 - 2¹⁰ = 28132579 is a prime.

It is not a weakly prime, because it can be changed into another prime (28130603) 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, 14066801 + 14066802.

It is an arithmetic number, because the mean of its divisors is an integer number (14066802).

Almost surely, 2^28133603 is an apocalyptic number.

28133603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28133603 is an equidigital number, since it uses as much as digits as its factorization.

28133603 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 28133603 is about 5304.1118955015. Note that the first 3 decimals coincide. The cubic root of 28133603 is about 304.1411041339.

Adding to 28133603 its reverse (30633182), we get a palindrome (58766785).

The spelling of 28133603 in words is "twenty-eight million, one hundred thirty-three thousand, six hundred three".