12180446 has 4 divisors (see below), whose sum is σ = 18270672. Its totient is φ = 6090222.

The previous prime is 12180401. The next prime is 12180461. The reversal of 12180446 is 64408121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64408121 = 17 ⋅3788713.

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 as a sum of consecutive naturals, namely, 3045110 + ... + 3045113.

It is an arithmetic number, because the mean of its divisors is an integer number (4567668).

Almost surely, 2^12180446 is an apocalyptic number.

12180446 is a deficient number, since it is larger than the sum of its proper divisors (6090226).

12180446 is an equidigital number, since it uses as much as digits as its factorization.

12180446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6090225.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 12180446 is about 3490.0495698485. The cubic root of 12180446 is about 230.0846947063.

Adding to 12180446 its reverse (64408121), we get a palindrome (76588567).

The spelling of 12180446 in words is "twelve million, one hundred eighty thousand, four hundred forty-six".