28092161 has 2 divisors, whose sum is σ = 28092162. Its totient is φ = 28092160.

The previous prime is 28092151. The next prime is 28092187. The reversal of 28092161 is 16129082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 10080625 = 4244^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 28092161 - 2¹⁰ = 28091137 is a prime.

It is not a weakly prime, because it can be changed into another prime (28092151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14046080 + 14046081.

It is an arithmetic number, because the mean of its divisors is an integer number (14046081).

Almost surely, 2^28092161 is an apocalyptic number.

It is an amenable number.

28092161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28092161 is an equidigital number, since it uses as much as digits as its factorization.

28092161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 28092161 is about 5300.2038640037. The cubic root of 28092161 is about 303.9916931306.

The spelling of 28092161 in words is "twenty-eight million, ninety-two thousand, one hundred sixty-one".