28196173 has 2 divisors, whose sum is σ = 28196174. Its totient is φ = 28196172.

The previous prime is 28196167. The next prime is 28196227. The reversal of 28196173 is 37169182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 5280804 = 4787^2 + 2298^2 .

It is a cyclic number.

It is not a de Polignac number, because 28196173 - 2¹⁷ = 28065101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28196123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14098086 + 14098087.

It is an arithmetic number, because the mean of its divisors is an integer number (14098087).

Almost surely, 2^28196173 is an apocalyptic number.

It is an amenable number.

28196173 is a deficient number, since it is larger than the sum of its proper divisors (1).

28196173 is an equidigital number, since it uses as much as digits as its factorization.

28196173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 28196173 is about 5310.0068738185. The cubic root of 28196173 is about 304.3664102497.

The spelling of 28196173 in words is "twenty-eight million, one hundred ninety-six thousand, one hundred seventy-three".