12987233 has 16 divisors (see below), whose sum is σ = 15504384. Its totient is φ = 10644480.

The previous prime is 12987229. The next prime is 12987253. The reversal of 12987233 is 33278921.

It is not a de Polignac number, because 12987233 - 2² = 12987229 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12987193 and 12987202.

It is not an unprimeable number, because it can be changed into a prime (12987253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20741 + ... + 21357.

It is an arithmetic number, because the mean of its divisors is an integer number (969024).

Almost surely, 2^12987233 is an apocalyptic number.

It is an amenable number.

12987233 is a deficient number, since it is larger than the sum of its proper divisors (2517151).

12987233 is an equidigital number, since it uses as much as digits as its factorization.

12987233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its digits is 18144, while the sum is 35.

The square root of 12987233 is about 3603.7803762161. The cubic root of 12987233 is about 235.0564705093.

The spelling of 12987233 in words is "twelve million, nine hundred eighty-seven thousand, two hundred thirty-three".