1805828 has 12 divisors (see below), whose sum is σ = 3234000. Its totient is φ = 881832.

The previous prime is 1805827. The next prime is 1805833. The reversal of 1805828 is 8285081.

It is a super-2 number, since 2×1805828² = 6522029531168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1805794 and 1805803.

It is not an unprimeable number, because it can be changed into a prime (1805821) 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, 5078 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (269500).

2^1805828 is an apocalyptic number.

It is an amenable number.

1805828 is a deficient number, since it is larger than the sum of its proper divisors (1428172).

1805828 is a wasteful number, since it uses less digits than its factorization.

1805828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546 (or 10544 counting only the distinct ones).

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

The square root of 1805828 is about 1343.8109986155. The cubic root of 1805828 is about 121.7751839312.

The spelling of 1805828 in words is "one million, eight hundred five thousand, eight hundred twenty-eight".