28975733 has 2 divisors, whose sum is σ = 28975734. Its totient is φ = 28975732.

The previous prime is 28975717. The next prime is 28975757. The reversal of 28975733 is 33757982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18722929 + 10252804 = 4327^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 28975733 - 2⁴ = 28975717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28975333) 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, 14487866 + 14487867.

It is an arithmetic number, because the mean of its divisors is an integer number (14487867).

Almost surely, 2^28975733 is an apocalyptic number.

It is an amenable number.

28975733 is a deficient number, since it is larger than the sum of its proper divisors (1).

28975733 is an equidigital number, since it uses as much as digits as its factorization.

28975733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 28975733 is about 5382.9112011996. The cubic root of 28975733 is about 307.1459622030.

The spelling of 28975733 in words is "twenty-eight million, nine hundred seventy-five thousand, seven hundred thirty-three".