28886633 has 2 divisors, whose sum is σ = 28886634. Its totient is φ = 28886632.

The previous prime is 28886617. The next prime is 28886651. The reversal of 28886633 is 33668882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 5721664 = 4813^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 28886633 - 2⁴ = 28886617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28886653) 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, 14443316 + 14443317.

It is an arithmetic number, because the mean of its divisors is an integer number (14443317).

Almost surely, 2^28886633 is an apocalyptic number.

It is an amenable number.

28886633 is a deficient number, since it is larger than the sum of its proper divisors (1).

28886633 is an equidigital number, since it uses as much as digits as its factorization.

28886633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 28886633 is about 5374.6286383340. The cubic root of 28886633 is about 306.8308156859.

The spelling of 28886633 in words is "twenty-eight million, eight hundred eighty-six thousand, six hundred thirty-three".