1381376 has 44 divisors (see below), whose sum is σ = 2947680. Its totient is φ = 645120.

The previous prime is 1381349. The next prime is 1381381. The reversal of 1381376 is 6731831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19421 + ... + 19491.

2^1381376 is an apocalyptic number.

1381376 is a gapful number since it is divisible by the number (16) 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 1381376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473840).

1381376 is an abundant number, since it is smaller than the sum of its proper divisors (1566304).

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

1381376 is an equidigital number, since it uses as much as digits as its factorization.

1381376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 92 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 1381376 is about 1175.3195310212. The cubic root of 1381376 is about 111.3706195008.

The spelling of 1381376 in words is "one million, three hundred eighty-one thousand, three hundred seventy-six".