1804906 has 8 divisors (see below), whose sum is σ = 2715840. Its totient is φ = 899628.

The previous prime is 1804871. The next prime is 1804919. The reversal of 1804906 is 6094081.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 496 + ... + 1963.

It is an arithmetic number, because the mean of its divisors is an integer number (339480).

2^1804906 is an apocalyptic number.

1804906 is a deficient number, since it is larger than the sum of its proper divisors (910934).

1804906 is a wasteful number, since it uses less digits than its factorization.

1804906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1804906 is about 1343.4679006214. The cubic root of 1804906 is about 121.7544555204.

Adding to 1804906 its reverse (6094081), we get a palindrome (7898987).

The spelling of 1804906 in words is "one million, eight hundred four thousand, nine hundred six".