12045320 has 32 divisors (see below), whose sum is σ = 30974400. Its totient is φ = 4129728.

The previous prime is 12045317. The next prime is 12045343. The reversal of 12045320 is 2354021.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21230 + ... + 21789.

It is an arithmetic number, because the mean of its divisors is an integer number (967950).

Almost surely, 2^12045320 is an apocalyptic number.

12045320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12045320 is an abundant number, since it is smaller than the sum of its proper divisors (18929080).

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

12045320 is a wasteful number, since it uses less digits than its factorization.

12045320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43037 (or 43033 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 12045320 is about 3470.6368291713. The cubic root of 12045320 is about 229.2307000493.

Adding to 12045320 its reverse (2354021), we get a palindrome (14399341).

The spelling of 12045320 in words is "twelve million, forty-five thousand, three hundred twenty".