1028593 has 4 divisors (see below), whose sum is σ = 1032768. Its totient is φ = 1024420.

The previous prime is 1028581. The next prime is 1028597. The reversal of 1028593 is 3958201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3958201 = 13 ⋅304477.

It is a cyclic number.

It is not a de Polignac number, because 1028593 - 2⁵ = 1028561 is a prime.

It is a Duffinian number.

1028593 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1028597) 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 in 3 ways as a sum of consecutive naturals, for example, 1693 + ... + 2218.

It is an arithmetic number, because the mean of its divisors is an integer number (258192).

2^1028593 is an apocalyptic number.

It is an amenable number.

1028593 is a deficient number, since it is larger than the sum of its proper divisors (4175).

1028593 is an equidigital number, since it uses as much as digits as its factorization.

1028593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1028593 is about 1014.1957404762. The cubic root of 1028593 is about 100.9441576090.

The spelling of 1028593 in words is "one million, twenty-eight thousand, five hundred ninety-three".