12805884 has 96 divisors (see below), whose sum is σ = 40893440. Its totient is φ = 3374784.

The previous prime is 12805861. The next prime is 12805901. The reversal of 12805884 is 48850821.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9177 + ... + 10479.

Almost surely, 2^12805884 is an apocalyptic number.

12805884 is a gapful number since it is divisible by the number (14) 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 12805884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20446720).

12805884 is an abundant number, since it is smaller than the sum of its proper divisors (28087556).

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

12805884 is a wasteful number, since it uses less digits than its factorization.

12805884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 12805884 is about 3578.5309835182. The cubic root of 12805884 is about 233.9572571503.

It can be divided in two parts, 12805 and 884, that added together give a square (13689 = 117²).

The spelling of 12805884 in words is "twelve million, eight hundred five thousand, eight hundred eighty-four".