1028685 has 32 divisors (see below), whose sum is σ = 1919232. Its totient is φ = 460800.

The previous prime is 1028683. The next prime is 1028737. The reversal of 1028685 is 5868201.

It is not a de Polignac number, because 1028685 - 2¹ = 1028683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10135 + ... + 10235.

It is an arithmetic number, because the mean of its divisors is an integer number (59976).

2^1028685 is an apocalyptic number.

1028685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028685 is a deficient number, since it is larger than the sum of its proper divisors (890547).

1028685 is a wasteful number, since it uses less digits than its factorization.

1028685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1028685 is about 1014.2410955981. The cubic root of 1028685 is about 100.9471670875.

The spelling of 1028685 in words is "one million, twenty-eight thousand, six hundred eighty-five".