12000305 has 16 divisors (see below), whose sum is σ = 15422400. Its totient is φ = 8936640.

The previous prime is 12000281. The next prime is 12000353. The reversal of 12000305 is 50300021.

12000305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12000305 - 2¹² = 11996209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4535 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^12000305 is an apocalyptic number.

It is an amenable number.

12000305 is a deficient number, since it is larger than the sum of its proper divisors (3422095).

12000305 is a wasteful number, since it uses less digits than its factorization.

12000305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 12000305 is about 3464.1456378161. The cubic root of 12000305 is about 228.9447881489.

Adding to 12000305 its reverse (50300021), we get a palindrome (62300326).

The spelling of 12000305 in words is "twelve million, three hundred five", and thus it is an aban number.