1806306 has 8 divisors (see below), whose sum is σ = 3612624. Its totient is φ = 602100.

The previous prime is 1806281. The next prime is 1806313. The reversal of 1806306 is 6036081.

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

1806306 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150520 + ... + 150531.

It is an arithmetic number, because the mean of its divisors is an integer number (451578).

2^1806306 is an apocalyptic number.

1806306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1806306 is a wasteful number, since it uses less digits than its factorization.

1806306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301056.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1806306 is about 1343.9888392394. The cubic root of 1806306 is about 121.7859275536.

It can be divided in two parts, 1806 and 306, that added together give a palindrome (2112).

The spelling of 1806306 in words is "one million, eight hundred six thousand, three hundred six".