28456193 has 2 divisors, whose sum is σ = 28456194. Its totient is φ = 28456192.

The previous prime is 28456187. The next prime is 28456229. The reversal of 28456193 is 39165482.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15618304 + 12837889 = 3952^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 28456193 - 2⁸ = 28455937 is a prime.

It is not a weakly prime, because it can be changed into another prime (28456123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14228096 + 14228097.

It is an arithmetic number, because the mean of its divisors is an integer number (14228097).

Almost surely, 2^28456193 is an apocalyptic number.

It is an amenable number.

28456193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28456193 is an equidigital number, since it uses as much as digits as its factorization.

28456193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 28456193 is about 5334.4346467081. The cubic root of 28456193 is about 305.2991528716.

The spelling of 28456193 in words is "twenty-eight million, four hundred fifty-six thousand, one hundred ninety-three".