12272813 has 8 divisors (see below), whose sum is σ = 14165760. Its totient is φ = 10414800.

The previous prime is 12272801. The next prime is 12272831. The reversal of 12272813 is 31827221.

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 12272813 - 2⁶ = 12272749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272893) 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, 7973 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (1770720).

Almost surely, 2^12272813 is an apocalyptic number.

It is an amenable number.

12272813 is a deficient number, since it is larger than the sum of its proper divisors (1892947).

12272813 is a wasteful number, since it uses less digits than its factorization.

12272813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17467.

The product of its digits is 1344, while the sum is 26.

The square root of 12272813 is about 3503.2574841139. The cubic root of 12272813 is about 230.6648250249.

The spelling of 12272813 in words is "twelve million, two hundred seventy-two thousand, eight hundred thirteen".