1378344 has 64 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 397760.

The previous prime is 1378339. The next prime is 1378373. The reversal of 1378344 is 4438731.

It is a d-powerful number, because it can be written as 1 + 3⁷ + 7⁶ + 8⁵ + 3¹¹ + 4² + 4¹⁰ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5959 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2^1378344 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 1378344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969920).

1378344 is an abundant number, since it is smaller than the sum of its proper divisors (2561496).

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

1378344 is a wasteful number, since it uses less digits than its factorization.

1378344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 266 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 1378344 is about 1174.0289604605. The cubic root of 1378344 is about 111.2890768756.

The spelling of 1378344 in words is "one million, three hundred seventy-eight thousand, three hundred forty-four".