12687224 has 16 divisors (see below), whose sum is σ = 25951320. Its totient is φ = 5766880.

The previous prime is 12687223. The next prime is 12687331. The reversal of 12687224 is 42278621.

12687224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71999 + ... + 72174.

Almost surely, 2^12687224 is an apocalyptic number.

It is an amenable number.

12687224 is an abundant number, since it is smaller than the sum of its proper divisors (13264096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12687224 is a wasteful number, since it uses less digits than its factorization.

12687224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144190 (or 144186 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 12687224 is about 3561.9129691782. The cubic root of 12687224 is about 233.2323935280.

The spelling of 12687224 in words is "twelve million, six hundred eighty-seven thousand, two hundred twenty-four".