2109306 has 8 divisors (see below), whose sum is σ = 4218624. Its totient is φ = 703100.

The previous prime is 2109293. The next prime is 2109311. The reversal of 2109306 is 6039012.

2109306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2109306 is an admirable number.

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, 175770 + ... + 175781.

It is an arithmetic number, because the mean of its divisors is an integer number (527328).

2^2109306 is an apocalyptic number.

2109306 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.

2109306 is a wasteful number, since it uses less digits than its factorization.

2109306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351556.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 2109306 is about 1452.3450003357. The cubic root of 2109306 is about 128.2467976052.

It can be divided in two parts, 2109 and 306, that added together give a triangular number (2415 = T₆₉).

The spelling of 2109306 in words is "two million, one hundred nine thousand, three hundred six".