12272843 has 4 divisors (see below), whose sum is σ = 13388568. Its totient is φ = 11157120.

The previous prime is 12272831. The next prime is 12272849. The reversal of 12272843 is 34827221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12272843 - 2⁶ = 12272779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12272849) 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 3 ways as a sum of consecutive naturals, for example, 557846 + ... + 557867.

It is an arithmetic number, because the mean of its divisors is an integer number (3347142).

Almost surely, 2^12272843 is an apocalyptic number.

12272843 is a deficient number, since it is larger than the sum of its proper divisors (1115725).

12272843 is a wasteful number, since it uses less digits than its factorization.

12272843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115724.

The product of its digits is 5376, while the sum is 29.

The square root of 12272843 is about 3503.2617658405. The cubic root of 12272843 is about 230.6650129726.

The spelling of 12272843 in words is "twelve million, two hundred seventy-two thousand, eight hundred forty-three".