12387146 has 8 divisors (see below), whose sum is σ = 18688644. Its totient is φ = 6157600.

The previous prime is 12387127. The next prime is 12387149. The reversal of 12387146 is 64178321.

It can be written as a sum of positive squares in 2 ways, for example, as 12327121 + 60025 = 3511^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12387149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17555 + ... + 18246.

Almost surely, 2^12387146 is an apocalyptic number.

12387146 is a deficient number, since it is larger than the sum of its proper divisors (6301498).

12387146 is a wasteful number, since it uses less digits than its factorization.

12387146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35976.

The product of its digits is 8064, while the sum is 32.

The square root of 12387146 is about 3519.5377537398. The cubic root of 12387146 is about 231.3789000387.

The spelling of 12387146 in words is "twelve million, three hundred eighty-seven thousand, one hundred forty-six".