12863844 has 36 divisors (see below), whose sum is σ = 37162944. Its totient is φ = 3675312.

The previous prime is 12863839. The next prime is 12863867. The reversal of 12863844 is 44836821.

12863844 is a `hidden beast` number, since 12 + 8 + 638 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 12863799 and 12863808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25272 + ... + 25775.

It is an arithmetic number, because the mean of its divisors is an integer number (1032304).

Almost surely, 2^12863844 is an apocalyptic number.

12863844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12863844 is an abundant number, since it is smaller than the sum of its proper divisors (24299100).

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

12863844 is a wasteful number, since it uses less digits than its factorization.

12863844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51064 (or 51059 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 12863844 is about 3586.6201360055. The cubic root of 12863844 is about 234.3096929510.

The spelling of 12863844 in words is "twelve million, eight hundred sixty-three thousand, eight hundred forty-four".