12180733 has 4 divisors (see below), whose sum is σ = 12509980. Its totient is φ = 11851488.

The previous prime is 12180719. The next prime is 12180743. The reversal of 12180733 is 33708121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11471769 + 708964 = 3387^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 12180733 - 2⁹ = 12180221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12180698 and 12180707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180703) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 164568 + ... + 164641.

It is an arithmetic number, because the mean of its divisors is an integer number (3127495).

Almost surely, 2^12180733 is an apocalyptic number.

It is an amenable number.

12180733 is a deficient number, since it is larger than the sum of its proper divisors (329247).

12180733 is an equidigital number, since it uses as much as digits as its factorization.

12180733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329246.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12180733 is about 3490.0906865009. The cubic root of 12180733 is about 230.0865018046.

Adding to 12180733 its reverse (33708121), we get a palindrome (45888854).

The spelling of 12180733 in words is "twelve million, one hundred eighty thousand, seven hundred thirty-three".