12868387 has 4 divisors (see below), whose sum is σ = 14706736. Its totient is φ = 11030040.

The previous prime is 12868381. The next prime is 12868393. The reversal of 12868387 is 78386821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12868381) and next prime (12868393).

It is not a de Polignac number, because 12868387 - 2¹¹ = 12866339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12868381) 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 3 ways as a sum of consecutive naturals, for example, 919164 + ... + 919177.

It is an arithmetic number, because the mean of its divisors is an integer number (3676684).

Almost surely, 2^12868387 is an apocalyptic number.

12868387 is a deficient number, since it is larger than the sum of its proper divisors (1838349).

12868387 is an equidigital number, since it uses as much as digits as its factorization.

12868387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838348.

The product of its digits is 129024, while the sum is 43.

The square root of 12868387 is about 3587.2534061591. The cubic root of 12868387 is about 234.3372726711.

The spelling of 12868387 in words is "twelve million, eight hundred sixty-eight thousand, three hundred eighty-seven".