12922647 has 8 divisors (see below), whose sum is σ = 17401200. Its totient is φ = 8529600.

The previous prime is 12922633. The next prime is 12922681. The reversal of 12922647 is 74622921.

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

It is not a de Polignac number, because 12922647 - 2¹² = 12918551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12922687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21022 + ... + 21627.

It is an arithmetic number, because the mean of its divisors is an integer number (2175150).

Almost surely, 2^12922647 is an apocalyptic number.

12922647 is a deficient number, since it is larger than the sum of its proper divisors (4478553).

12922647 is a wasteful number, since it uses less digits than its factorization.

12922647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42753.

The product of its digits is 12096, while the sum is 33.

The square root of 12922647 is about 3594.8083398145. The cubic root of 12922647 is about 234.6661745732. Note that the first 3 decimals are identical.

The spelling of 12922647 in words is "twelve million, nine hundred twenty-two thousand, six hundred forty-seven".