1318440 has 32 divisors (see below), whose sum is σ = 3955680. Its totient is φ = 351552.

The previous prime is 1318411. The next prime is 1318441. The reversal of 1318440 is 448131.

It is not an unprimeable number, because it can be changed into a prime (1318441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5374 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (123615).

2^1318440 is an apocalyptic number.

1318440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318440 is an abundant number, since it is smaller than the sum of its proper divisors (2637240).

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

1318440 is a wasteful number, since it uses less digits than its factorization.

1318440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001 (or 10997 counting only the distinct ones).

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

The square root of 1318440 is about 1148.2334257458. The cubic root of 1318440 is about 109.6529003865.

The spelling of 1318440 in words is "one million, three hundred eighteen thousand, four hundred forty".