12205394 has 8 divisors (see below), whose sum is σ = 18332028. Its totient is φ = 6094720.

The previous prime is 12205393. The next prime is 12205441. The reversal of 12205394 is 49350221.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 46225 = 3487^2 + 215^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12205393) by changing a digit.

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, 1847 + ... + 5274.

Almost surely, 2^12205394 is an apocalyptic number.

12205394 is a deficient number, since it is larger than the sum of its proper divisors (6126634).

12205394 is an equidigital number, since it uses as much as digits as its factorization.

12205394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7980.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 12205394 is about 3493.6219028395. The cubic root of 12205394 is about 230.2416741366.

The spelling of 12205394 in words is "twelve million, two hundred five thousand, three hundred ninety-four".