1808528 has 40 divisors (see below), whose sum is σ = 3805560. Its totient is φ = 829440.

The previous prime is 1808507. The next prime is 1808539. The reversal of 1808528 is 8258081.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 1607824 = 448^2 + 1268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1808494 and 1808503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16538 + ... + 16646.

It is an arithmetic number, because the mean of its divisors is an integer number (95139).

2^1808528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902780).

1808528 is an abundant number, since it is smaller than the sum of its proper divisors (1997032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1808528 is a wasteful number, since it uses less digits than its factorization.

1808528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 1808528 is about 1344.8152289441. The cubic root of 1808528 is about 121.8358447964.

The spelling of 1808528 in words is "one million, eight hundred eight thousand, five hundred twenty-eight".