12009340 has 24 divisors (see below), whose sum is σ = 28822752. Its totient is φ = 4117440.

The previous prime is 12009337. The next prime is 12009367. The reversal of 12009340 is 4390021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42751 + ... + 43030.

It is an arithmetic number, because the mean of its divisors is an integer number (1200948).

Almost surely, 2^12009340 is an apocalyptic number.

12009340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12009340 is an abundant number, since it is smaller than the sum of its proper divisors (16813412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12009340 is a wasteful number, since it uses less digits than its factorization.

12009340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85797 (or 85795 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12009340 is about 3465.4494657981. The cubic root of 12009340 is about 229.0022310570.

Adding to 12009340 its reverse (4390021), we get a palindrome (16399361).

The spelling of 12009340 in words is "twelve million, nine thousand, three hundred forty".