12987234 has 24 divisors (see below), whose sum is σ = 30304092. Its totient is φ = 3996000.

The previous prime is 12987229. The next prime is 12987253. The reversal of 12987234 is 43278921.

It can be written as a sum of positive squares in 2 ways, for example, as 12981609 + 5625 = 3603^2 + 75^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27517 + ... + 27984.

Almost surely, 2^12987234 is an apocalyptic number.

12987234 is an abundant number, since it is smaller than the sum of its proper divisors (17316858).

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

12987234 is a wasteful number, since it uses less digits than its factorization.

12987234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55522 (or 55519 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12987234 is about 3603.7805149593. The cubic root of 12987234 is about 235.0564765423.

The spelling of 12987234 in words is "twelve million, nine hundred eighty-seven thousand, two hundred thirty-four".