28633793 has 2 divisors, whose sum is σ = 28633794. Its totient is φ = 28633792.

The previous prime is 28633771. The next prime is 28633799. The reversal of 28633793 is 39733682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 2999824 = 5063^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 28633793 - 2¹² = 28629697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28633793.

It is not a weakly prime, because it can be changed into another prime (28633799) 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, 14316896 + 14316897.

It is an arithmetic number, because the mean of its divisors is an integer number (14316897).

Almost surely, 2^28633793 is an apocalyptic number.

It is an amenable number.

28633793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28633793 is an equidigital number, since it uses as much as digits as its factorization.

28633793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 28633793 is about 5351.0553164773. The cubic root of 28633793 is about 305.9329776177.

The spelling of 28633793 in words is "twenty-eight million, six hundred thirty-three thousand, seven hundred ninety-three".