12320487 has 6 divisors (see below), whose sum is σ = 17796272. Its totient is φ = 8213652.

The previous prime is 12320471. The next prime is 12320491. The reversal of 12320487 is 78402321.

It is not a de Polignac number, because 12320487 - 2⁴ = 12320471 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12320487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684463 + ... + 684480.

Almost surely, 2^12320487 is an apocalyptic number.

12320487 is a deficient number, since it is larger than the sum of its proper divisors (5475785).

12320487 is a wasteful number, since it uses less digits than its factorization.

12320487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368949 (or 1368946 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12320487 is about 3510.0551277722. The cubic root of 12320487 is about 230.9631132421.

The spelling of 12320487 in words is "twelve million, three hundred twenty thousand, four hundred eighty-seven".