2193806 has 8 divisors (see below), whose sum is σ = 3297024. Its totient is φ = 1094800.

The previous prime is 2193803. The next prime is 2193827. The reversal of 2193806 is 6083912.

2193806 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193803) by changing a digit.

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, 1331 + ... + 2481.

It is an arithmetic number, because the mean of its divisors is an integer number (412128).

2^2193806 is an apocalyptic number.

2193806 is a deficient number, since it is larger than the sum of its proper divisors (1103218).

2193806 is a wasteful number, since it uses less digits than its factorization.

2193806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2193806 is about 1481.1502287074. The cubic root of 2193806 is about 129.9369714188.

The spelling of 2193806 in words is "two million, one hundred ninety-three thousand, eight hundred six".