12287808 has 112 divisors (see below), whose sum is σ = 38973760. Its totient is φ = 3773952.

The previous prime is 12287801. The next prime is 12287827. The reversal of 12287808 is 80878221.

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 (12287801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22191 + ... + 22737.

It is an arithmetic number, because the mean of its divisors is an integer number (347980).

Almost surely, 2^12287808 is an apocalyptic number.

12287808 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 12287808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19486880).

12287808 is an abundant number, since it is smaller than the sum of its proper divisors (26685952).

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

12287808 is a wasteful number, since it uses less digits than its factorization.

12287808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 12287808 is about 3505.3969817982. The cubic root of 12287808 is about 230.7587293683.

The spelling of 12287808 in words is "twelve million, two hundred eighty-seven thousand, eight hundred eight".