12840382 has 8 divisors (see below), whose sum is σ = 19281096. Its totient is φ = 6413352.

The previous prime is 12840367. The next prime is 12840383. The reversal of 12840382 is 28304821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12840382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (2410137).

Almost surely, 2^12840382 is an apocalyptic number.

12840382 is a deficient number, since it is larger than the sum of its proper divisors (6440714).

12840382 is a wasteful number, since it uses less digits than its factorization.

12840382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 12840382 is about 3583.3478759395. The cubic root of 12840382 is about 234.1671559930.

The spelling of 12840382 in words is "twelve million, eight hundred forty thousand, three hundred eighty-two".