12784971 has 8 divisors (see below), whose sum is σ = 17064000. Its totient is φ = 8514632.

The previous prime is 12784951. The next prime is 12784991. The reversal of 12784971 is 17948721.

It is an interprime number because it is at equal distance from previous prime (12784951) and next prime (12784991).

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 12784971 - 2⁷ = 12784843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12784921) 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, 3076 + ... + 5918.

It is an arithmetic number, because the mean of its divisors is an integer number (2133000).

Almost surely, 2^12784971 is an apocalyptic number.

12784971 is a deficient number, since it is larger than the sum of its proper divisors (4279029).

12784971 is a wasteful number, since it uses less digits than its factorization.

12784971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345.

The product of its digits is 28224, while the sum is 39.

The square root of 12784971 is about 3575.6077805039. The cubic root of 12784971 is about 233.8298309882.

The spelling of 12784971 in words is "twelve million, seven hundred eighty-four thousand, nine hundred seventy-one".