1806128 has 20 divisors (see below), whose sum is σ = 3526560. Its totient is φ = 896064.

The previous prime is 1806113. The next prime is 1806137. The reversal of 1806128 is 8216081.

It is a junction number, because it is equal to n+sod(n) for n = 1806097 and 1806106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (176328).

2^1806128 is an apocalyptic number.

It is an amenable number.

1806128 is a deficient number, since it is larger than the sum of its proper divisors (1720432).

1806128 is a wasteful number, since it uses less digits than its factorization.

1806128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1806128 is about 1343.9226168199. The cubic root of 1806128 is about 121.7819270119.

The spelling of 1806128 in words is "one million, eight hundred six thousand, one hundred twenty-eight".