1381056 has 28 divisors (see below), whose sum is σ = 3654552. Its totient is φ = 460288.

The previous prime is 1381043. The next prime is 1381057. The reversal of 1381056 is 6501831.

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

It is not an unprimeable number, because it can be changed into a prime (1381057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405 + ... + 3788.

2^1381056 is an apocalyptic number.

1381056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381056 is an abundant number, since it is smaller than the sum of its proper divisors (2273496).

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

1381056 is an equidigital number, since it uses as much as digits as its factorization.

1381056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208 (or 7198 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1381056 is about 1175.1833899439. The cubic root of 1381056 is about 111.3620190544.

Adding to 1381056 its reverse (6501831), we get a palindrome (7882887).

The spelling of 1381056 in words is "one million, three hundred eighty-one thousand, fifty-six".