12803868 has 144 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 3196800.

The previous prime is 12803867. The next prime is 12803897. The reversal of 12803868 is 86830821.

It is a super-2 number, since 2×12803868² = 327878071522848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12803863) 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 47 ways as a sum of consecutive naturals, for example, 85858 + ... + 86006.

It is an arithmetic number, because the mean of its divisors is an integer number (291200).

Almost surely, 2^12803868 is an apocalyptic number.

12803868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12803868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20966400).

12803868 is an abundant number, since it is smaller than the sum of its proper divisors (29128932).

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

12803868 is a wasteful number, since it uses less digits than its factorization.

12803868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 12803868 is about 3578.2492926011. The cubic root of 12803868 is about 233.9449793936.

The spelling of 12803868 in words is "twelve million, eight hundred three thousand, eight hundred sixty-eight".