12863988 has 48 divisors (see below), whose sum is σ = 35112000. Its totient is φ = 4061664.

The previous prime is 12863953. The next prime is 12863989. The reversal of 12863988 is 88936821.

12863988 is a `hidden beast` number, since 1 + 2 + 8 + 639 + 8 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863989) 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, 1083 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (731500).

Almost surely, 2^12863988 is an apocalyptic number.

12863988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12863988 is an abundant number, since it is smaller than the sum of its proper divisors (22248012).

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

12863988 is a wasteful number, since it uses less digits than its factorization.

12863988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301 (or 6293 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12863988 is about 3586.6402105592. The cubic root of 12863988 is about 234.3105672482.

The spelling of 12863988 in words is "twelve million, eight hundred sixty-three thousand, nine hundred eighty-eight".