1318688 has 54 divisors (see below), whose sum is σ = 3127761. Its totient is φ = 545664.

The previous prime is 1318663. The next prime is 1318697. The reversal of 1318688 is 8868131.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 784 = 1148^2 + 28^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=812.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45458 + ... + 45486.

2^1318688 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 1318688

1318688 is an abundant number, since it is smaller than the sum of its proper divisors (1809073).

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

1318688 is an equidigital number, since it uses as much as digits as its factorization.

1318688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 38 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 1318688 is about 1148.3414126470. The cubic root of 1318688 is about 109.6597752322.

The spelling of 1318688 in words is "one million, three hundred eighteen thousand, six hundred eighty-eight".