1840556 has 12 divisors (see below), whose sum is σ = 3410568. Its totient is φ = 866112.

The previous prime is 1840541. The next prime is 1840561. The reversal of 1840556 is 6550481.

It is a happy 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, 13466 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (284214).

2^1840556 is an apocalyptic number.

It is an amenable number.

1840556 is a deficient number, since it is larger than the sum of its proper divisors (1570012).

1840556 is a wasteful number, since it uses less digits than its factorization.

1840556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27088 (or 27086 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1840556 is about 1356.6709254642. The cubic root of 1840556 is about 122.5508549089.

The spelling of 1840556 in words is "one million, eight hundred forty thousand, five hundred fifty-six".