28888193 has 2 divisors, whose sum is σ = 28888194. Its totient is φ = 28888192.

The previous prime is 28888159. The next prime is 28888199. The reversal of 28888193 is 39188882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26553409 + 2334784 = 5153^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 28888193 - 2⁶ = 28888129 is a prime.

It is not a weakly prime, because it can be changed into another prime (28888199) 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, 14444096 + 14444097.

It is an arithmetic number, because the mean of its divisors is an integer number (14444097).

Almost surely, 2^28888193 is an apocalyptic number.

It is an amenable number.

28888193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888193 is an equidigital number, since it uses as much as digits as its factorization.

28888193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 47.

The square root of 28888193 is about 5374.7737626806. The cubic root of 28888193 is about 306.8363389725.

The spelling of 28888193 in words is "twenty-eight million, eight hundred eighty-eight thousand, one hundred ninety-three".