1317648 has 40 divisors (see below), whose sum is σ = 3451168. Its totient is φ = 433152.

The previous prime is 1317629. The next prime is 1317671. The reversal of 1317648 is 8467131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4515 + ... + 4797.

2^1317648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725584).

1317648 is an abundant number, since it is smaller than the sum of its proper divisors (2133520).

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

1317648 is a wasteful number, since it uses less digits than its factorization.

1317648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 385 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1317648 is about 1147.8884963271. Note that the first 3 decimals coincide. The cubic root of 1317648 is about 109.6309394599.

The spelling of 1317648 in words is "one million, three hundred seventeen thousand, six hundred forty-eight".