12273287 has 6 divisors (see below), whose sum is σ = 13290192. Its totient is φ = 11329032.

The previous prime is 12273281. The next prime is 12273299. The reversal of 12273287 is 78237221.

It is not a de Polignac number, because 12273287 - 2⁶ = 12273223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12273281) 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 5 ways as a sum of consecutive naturals, for example, 36143 + ... + 36480.

It is an arithmetic number, because the mean of its divisors is an integer number (2215032).

Almost surely, 2^12273287 is an apocalyptic number.

12273287 is a deficient number, since it is larger than the sum of its proper divisors (1016905).

12273287 is an equidigital number, since it uses as much as digits as its factorization.

12273287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72649 (or 72636 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 12273287 is about 3503.3251347827. The cubic root of 12273287 is about 230.6677945620.

The spelling of 12273287 in words is "twelve million, two hundred seventy-three thousand, two hundred eighty-seven".