12806340 has 48 divisors (see below), whose sum is σ = 36456000. Its totient is φ = 3358080.

The previous prime is 12806327. The next prime is 12806351. The reversal of 12806340 is 4360821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12806340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1911 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (759500).

Almost surely, 2^12806340 is an apocalyptic number.

12806340 is a gapful number since it is divisible by the number (10) 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 12806340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18228000).

12806340 is an abundant number, since it is smaller than the sum of its proper divisors (23649660).

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

12806340 is a wasteful number, since it uses less digits than its factorization.

12806340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 12806340 is about 3578.5946962460. The cubic root of 12806340 is about 233.9600340832.

The spelling of 12806340 in words is "twelve million, eight hundred six thousand, three hundred forty".