12193287 has 8 divisors (see below), whose sum is σ = 16289136. Its totient is φ = 8113152.

The previous prime is 12193283. The next prime is 12193297. The reversal of 12193287 is 78239121.

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

It is not a de Polignac number, because 12193287 - 2² = 12193283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193283) 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 7 ways as a sum of consecutive naturals, for example, 1978 + ... + 5319.

It is an arithmetic number, because the mean of its divisors is an integer number (2036142).

Almost surely, 2^12193287 is an apocalyptic number.

12193287 is a deficient number, since it is larger than the sum of its proper divisors (4095849).

12193287 is an equidigital number, since it uses as much as digits as its factorization.

12193287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857.

The product of its digits is 6048, while the sum is 33.

The square root of 12193287 is about 3491.8887439321. Note that the first 3 decimals coincide. The cubic root of 12193287 is about 230.1655204255.

The spelling of 12193287 in words is "twelve million, one hundred ninety-three thousand, two hundred eighty-seven".