12722347 has 8 divisors (see below), whose sum is σ = 14114880. Its totient is φ = 11369160.

The previous prime is 12722321. The next prime is 12722351. The reversal of 12722347 is 74322721.

12722347 is digitally balanced in base 3, 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 not a de Polignac number, because 12722347 - 2⁷ = 12722219 is a prime.

It is a super-2 number, since 2×12722347² = 323716226376818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722317) 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, 9153 + ... + 10450.

It is an arithmetic number, because the mean of its divisors is an integer number (1764360).

Almost surely, 2^12722347 is an apocalyptic number.

12722347 is a deficient number, since it is larger than the sum of its proper divisors (1392533).

12722347 is a wasteful number, since it uses less digits than its factorization.

12722347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19673.

The product of its digits is 4704, while the sum is 28.

The square root of 12722347 is about 3566.8399179105. The cubic root of 12722347 is about 233.4474201726.

The spelling of 12722347 in words is "twelve million, seven hundred twenty-two thousand, three hundred forty-seven".