1327986 has 48 divisors (see below), whose sum is σ = 3313440. Its totient is φ = 380160.

The previous prime is 1327973. The next prime is 1327987. The reversal of 1327986 is 6897231.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1327986.

It is not an unprimeable number, because it can be changed into a prime (1327987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3586 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (69030).

2^1327986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1327986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656720).

1327986 is an abundant number, since it is smaller than the sum of its proper divisors (1985454).

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

1327986 is a wasteful number, since it uses less digits than its factorization.

1327986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 388 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1327986 is about 1152.3827489163. The cubic root of 1327986 is about 109.9169069450.

It can be divided in two parts, 132 and 7986, that added together give a palindrome (8118).

The spelling of 1327986 in words is "one million, three hundred twenty-seven thousand, nine hundred eighty-six".