1028285 has 4 divisors (see below), whose sum is σ = 1233948. Its totient is φ = 822624.

The previous prime is 1028273. The next prime is 1028303. The reversal of 1028285 is 5828201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5828201 = 113 ⋅51577.

It can be written as a sum of positive squares in 2 ways, for example, as 326041 + 702244 = 571^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028285 - 2⁶ = 1028221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 102824 + ... + 102833.

It is an arithmetic number, because the mean of its divisors is an integer number (308487).

2^1028285 is an apocalyptic number.

It is an amenable number.

1028285 is a deficient number, since it is larger than the sum of its proper divisors (205663).

1028285 is an equidigital number, since it uses as much as digits as its factorization.

1028285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205662.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1028285 is about 1014.0438846519. The cubic root of 1028285 is about 100.9340810920.

The spelling of 1028285 in words is "one million, twenty-eight thousand, two hundred eighty-five".