1318404 has 24 divisors (see below), whose sum is σ = 3098368. Its totient is φ = 436320.

The previous prime is 1318379. The next prime is 1318409. The reversal of 1318404 is 4048131.

It is not an unprimeable number, because it can be changed into a prime (1318409) by changing a digit.

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, 1869 + ... + 2475.

2^1318404 is an apocalyptic number.

It is an amenable number.

1318404 is an abundant number, since it is smaller than the sum of its proper divisors (1779964).

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

1318404 is a wasteful number, since it uses less digits than its factorization.

1318404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1318404 is about 1148.2177493838. The cubic root of 1318404 is about 109.6519023534.

The spelling of 1318404 in words is "one million, three hundred eighteen thousand, four hundred four".