12693387 has 32 divisors (see below), whose sum is σ = 21081600. Its totient is φ = 6628608.

The previous prime is 12693379. The next prime is 12693413. The reversal of 12693387 is 78339621.

It is not a de Polignac number, because 12693387 - 2³ = 12693379 is a prime.

It is a super-2 number, since 2×12693387² = 322244147063538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12693367) 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 31 ways as a sum of consecutive naturals, for example, 11023 + ... + 12119.

It is an arithmetic number, because the mean of its divisors is an integer number (658800).

Almost surely, 2^12693387 is an apocalyptic number.

12693387 is a deficient number, since it is larger than the sum of its proper divisors (8388213).

12693387 is a wasteful number, since it uses less digits than its factorization.

12693387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its digits is 54432, while the sum is 39.

The square root of 12693387 is about 3562.7779891540. Note that the first 3 decimals coincide. The cubic root of 12693387 is about 233.2701527352.

It can be divided in two parts, 1269 and 3387, that added together give a triangular number (4656 = T₉₆).

The spelling of 12693387 in words is "twelve million, six hundred ninety-three thousand, three hundred eighty-seven".