1318872 has 32 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 435744.

The previous prime is 1318861. The next prime is 1318879. The reversal of 1318872 is 2788131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4143 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2^1318872 is an apocalyptic number.

1318872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1318872 is an abundant number, since it is smaller than the sum of its proper divisors (2007528).

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

1318872 is a wasteful number, since it uses less digits than its factorization.

1318872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 491 counting only the distinct ones).

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

The square root of 1318872 is about 1148.4215253991. The cubic root of 1318872 is about 109.6648753671.

The spelling of 1318872 in words is "one million, three hundred eighteen thousand, eight hundred seventy-two".