1381344 has 24 divisors (see below), whose sum is σ = 3626280. Its totient is φ = 460416.

The previous prime is 1381337. The next prime is 1381349. The reversal of 1381344 is 4431831.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1381344² = 3816222492672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7099 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (151095).

2^1381344 is an apocalyptic number.

It is an amenable number.

1381344 is an abundant number, since it is smaller than the sum of its proper divisors (2244936).

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

1381344 is a wasteful number, since it uses less digits than its factorization.

1381344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14402 (or 14394 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1381344 is about 1175.3059176232. The cubic root of 1381344 is about 111.3697595159.

The spelling of 1381344 in words is "one million, three hundred eighty-one thousand, three hundred forty-four".