1081444 has 24 divisors (see below), whose sum is σ = 2330048. Its totient is φ = 427680.

The previous prime is 1081441. The next prime is 1081477. The reversal of 1081444 is 4441801.

It is a super-2 number, since 2×1081444² = 2339042250272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1081441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1122 + ... + 1849.

2^1081444 is an apocalyptic number.

1081444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1081444 is an abundant number, since it is smaller than the sum of its proper divisors (1248604).

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

1081444 is a wasteful number, since it uses less digits than its factorization.

1081444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 1081444 is about 1039.9249972955. The cubic root of 1081444 is about 102.6442624601.

The spelling of 1081444 in words is "one million, eighty-one thousand, four hundred forty-four".