1028393 has 2 divisors, whose sum is σ = 1028394. Its totient is φ = 1028392.

The previous prime is 1028389. The next prime is 1028411. The reversal of 1028393 is 3938201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582169 + 446224 = 763^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028393 - 2² = 1028389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1028303) 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, 514196 + 514197.

It is an arithmetic number, because the mean of its divisors is an integer number (514197).

2^1028393 is an apocalyptic number.

It is an amenable number.

1028393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028393 is an equidigital number, since it uses as much as digits as its factorization.

1028393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1028393 is about 1014.0971353869. The cubic root of 1028393 is about 100.9376146452.

It can be divided in two parts, 102 and 8393, that multiplied together give a triangular number (856086 = T₁₃₀₈).

The spelling of 1028393 in words is "one million, twenty-eight thousand, three hundred ninety-three".