12724229 has 16 divisors (see below), whose sum is σ = 15138816. Its totient is φ = 10465200.

The previous prime is 12724223. The next prime is 12724249. The reversal of 12724229 is 92242721.

It is a cyclic number.

It is not a de Polignac number, because 12724229 - 2⁴ = 12724213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41294 + ... + 41600.

It is an arithmetic number, because the mean of its divisors is an integer number (946176).

Almost surely, 2^12724229 is an apocalyptic number.

It is an amenable number.

12724229 is a deficient number, since it is larger than the sum of its proper divisors (2414587).

12724229 is a wasteful number, since it uses less digits than its factorization.

12724229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its digits is 4032, while the sum is 29.

The square root of 12724229 is about 3567.1037271153. The cubic root of 12724229 is about 233.4589307946.

The spelling of 12724229 in words is "twelve million, seven hundred twenty-four thousand, two hundred twenty-nine".