1840028 has 12 divisors (see below), whose sum is σ = 3239880. Its totient is φ = 914352.

The previous prime is 1840019. The next prime is 1840031. The reversal of 1840028 is 8200481.

It is a junction number, because it is equal to n+sod(n) for n = 1839985 and 1840012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (269990).

2^1840028 is an apocalyptic number.

It is an amenable number.

1840028 is a deficient number, since it is larger than the sum of its proper divisors (1399852).

1840028 is a wasteful number, since it uses less digits than its factorization.

1840028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1840028 is about 1356.4763175227. The cubic root of 1840028 is about 122.5391350736.

The spelling of 1840028 in words is "one million, eight hundred forty thousand, twenty-eight".