28929833 has 2 divisors, whose sum is σ = 28929834. Its totient is φ = 28929832.

The previous prime is 28929829. The next prime is 28929839. The reversal of 28929833 is 33892982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28270489 + 659344 = 5317^2 + 812^2 .

It is a cyclic number.

It is not a de Polignac number, because 28929833 - 2² = 28929829 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 (28929839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14464916 + 14464917.

It is an arithmetic number, because the mean of its divisors is an integer number (14464917).

Almost surely, 2^28929833 is an apocalyptic number.

It is an amenable number.

28929833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28929833 is an equidigital number, since it uses as much as digits as its factorization.

28929833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 28929833 is about 5378.6460192134. The cubic root of 28929833 is about 306.9836948054.

The spelling of 28929833 in words is "twenty-eight million, nine hundred twenty-nine thousand, eight hundred thirty-three".