12987047 has 8 divisors (see below), whose sum is σ = 13578240. Its totient is φ = 12406680.

The previous prime is 12987017. The next prime is 12987053. The reversal of 12987047 is 74078921.

12987047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12987047 - 2¹⁰ = 12986023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12987047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203 + ... + 5100.

It is an arithmetic number, because the mean of its divisors is an integer number (1697280).

Almost surely, 2^12987047 is an apocalyptic number.

12987047 is a deficient number, since it is larger than the sum of its proper divisors (591193).

12987047 is an equidigital number, since it uses as much as digits as its factorization.

12987047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 12987047 is about 3603.7545698896. The cubic root of 12987047 is about 235.0553483634.

The spelling of 12987047 in words is "twelve million, nine hundred eighty-seven thousand, forty-seven".