12987227 has 4 divisors (see below), whose sum is σ = 14167896. Its totient is φ = 11806560.

The previous prime is 12987217. The next prime is 12987229. The reversal of 12987227 is 72278921.

12987227 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12987227 - 2⁸ = 12986971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12987229) 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, 590318 + ... + 590339.

It is an arithmetic number, because the mean of its divisors is an integer number (3541974).

Almost surely, 2^12987227 is an apocalyptic number.

12987227 is a deficient number, since it is larger than the sum of its proper divisors (1180669).

12987227 is a wasteful number, since it uses less digits than its factorization.

12987227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180668.

The product of its digits is 28224, while the sum is 38.

The square root of 12987227 is about 3603.7795437568. The cubic root of 12987227 is about 235.0564343112.

The spelling of 12987227 in words is "twelve million, nine hundred eighty-seven thousand, two hundred twenty-seven".