1317288 has 32 divisors (see below), whose sum is σ = 3764160. Its totient is φ = 376320.

The previous prime is 1317271. The next prime is 1317299. The reversal of 1317288 is 8827131.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3753 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (117630).

2^1317288 is an apocalyptic number.

It is an amenable number.

1317288 is an abundant number, since it is smaller than the sum of its proper divisors (2446872).

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

1317288 is a wasteful number, since it uses less digits than its factorization.

1317288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857 (or 7853 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 1317288 is about 1147.7316759592. The cubic root of 1317288 is about 109.6209543113.

The spelling of 1317288 in words is "one million, three hundred seventeen thousand, two hundred eighty-eight".