1320844 has 36 divisors (see below), whose sum is σ = 2815344. Its totient is φ = 539616.

The previous prime is 1320811. The next prime is 1320859. The reversal of 1320844 is 4480231.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4362 + ... + 4654.

It is an arithmetic number, because the mean of its divisors is an integer number (78204).

2^1320844 is an apocalyptic number.

1320844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407672).

1320844 is an abundant number, since it is smaller than the sum of its proper divisors (1494500).

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

1320844 is a wasteful number, since it uses less digits than its factorization.

1320844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1320844 is about 1149.2797744675. The cubic root of 1320844 is about 109.7195057479.

The spelling of 1320844 in words is "one million, three hundred twenty thousand, eight hundred forty-four".