1444420 has 12 divisors (see below), whose sum is σ = 3033324. Its totient is φ = 577760.

The previous prime is 1444411. The next prime is 1444441. The reversal of 1444420 is 244441.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 1032256 = 642^2 + 1016^2 .

It is an unprimeable number.

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, 36091 + ... + 36130.

It is an arithmetic number, because the mean of its divisors is an integer number (252777).

2^1444420 is an apocalyptic number.

1444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444420 is an abundant number, since it is smaller than the sum of its proper divisors (1588904).

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

1444420 is a wasteful number, since it uses less digits than its factorization.

1444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72230 (or 72228 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1444420 is about 1201.8402556080. The cubic root of 1444420 is about 113.0397437665.

Adding to 1444420 its reverse (244441), we get a palindrome (1688861).

The spelling of 1444420 in words is "one million, four hundred forty-four thousand, four hundred twenty".