28395293 has 2 divisors, whose sum is σ = 28395294. Its totient is φ = 28395292.

The previous prime is 28395281. The next prime is 28395299. The reversal of 28395293 is 39259382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28111204 + 284089 = 5302^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 28395293 - 2⁴ = 28395277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28395293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28395299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14197646 + 14197647.

It is an arithmetic number, because the mean of its divisors is an integer number (14197647).

Almost surely, 2^28395293 is an apocalyptic number.

It is an amenable number.

28395293 is a deficient number, since it is larger than the sum of its proper divisors (1).

28395293 is an equidigital number, since it uses as much as digits as its factorization.

28395293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 28395293 is about 5328.7233930839. The cubic root of 28395293 is about 305.0812038552.

The spelling of 28395293 in words is "twenty-eight million, three hundred ninety-five thousand, two hundred ninety-three".