28768361 has 2 divisors, whose sum is σ = 28768362. Its totient is φ = 28768360.

The previous prime is 28768349. The next prime is 28768367. The reversal of 28768361 is 16386782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15555136 + 13213225 = 3944^2 + 3635^2 .

It is a cyclic number.

It is not a de Polignac number, because 28768361 - 2⁶ = 28768297 is a prime.

It is not a weakly prime, because it can be changed into another prime (28768367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384180 + 14384181.

It is an arithmetic number, because the mean of its divisors is an integer number (14384181).

Almost surely, 2^28768361 is an apocalyptic number.

It is an amenable number.

28768361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768361 is an equidigital number, since it uses as much as digits as its factorization.

28768361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 28768361 is about 5363.6145461806. The cubic root of 28768361 is about 306.4114852353.

The spelling of 28768361 in words is "twenty-eight million, seven hundred sixty-eight thousand, three hundred sixty-one".