1685828 has 12 divisors (see below), whose sum is σ = 3052140. Its totient is φ = 813792.

The previous prime is 1685821. The next prime is 1685833. The reversal of 1685828 is 8285861.

It can be written as a sum of positive squares in 2 ways, for example, as 925444 + 760384 = 962^2 + 872^2 .

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1685791 and 1685800.

It is not an unprimeable number, because it can be changed into a prime (1685821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7151 + ... + 7382.

It is an arithmetic number, because the mean of its divisors is an integer number (254345).

2^1685828 is an apocalyptic number.

It is an amenable number.

1685828 is a deficient number, since it is larger than the sum of its proper divisors (1366312).

1685828 is a wasteful number, since it uses less digits than its factorization.

1685828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14566 (or 14564 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 1685828 is about 1298.3943930871. The cubic root of 1685828 is about 119.0157453920.

The spelling of 1685828 in words is "one million, six hundred eighty-five thousand, eight hundred twenty-eight".