12203806 has 4 divisors (see below), whose sum is σ = 18305712. Its totient is φ = 6101902.

The previous prime is 12203803. The next prime is 12203831. The reversal of 12203806 is 60830221.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3050950 + ... + 3050953.

It is an arithmetic number, because the mean of its divisors is an integer number (4576428).

Almost surely, 2^12203806 is an apocalyptic number.

12203806 is a deficient number, since it is larger than the sum of its proper divisors (6101906).

12203806 is an equidigital number, since it uses as much as digits as its factorization.

12203806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101905.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12203806 is about 3493.3946241443. The cubic root of 12203806 is about 230.2316883976.

The spelling of 12203806 in words is "twelve million, two hundred three thousand, eight hundred six".