1444220 has 12 divisors (see below), whose sum is σ = 3032904. Its totient is φ = 577680.

The previous prime is 1444217. The next prime is 1444237. The reversal of 1444220 is 224441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36086 + ... + 36125.

It is an arithmetic number, because the mean of its divisors is an integer number (252742).

2^1444220 is an apocalyptic number.

1444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444220 is an abundant number, since it is smaller than the sum of its proper divisors (1588684).

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

1444220 is a wasteful number, since it uses less digits than its factorization.

1444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72220 (or 72218 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1444220 is about 1201.7570469941. The cubic root of 1444220 is about 113.0345262185.

Adding to 1444220 its reverse (224441), we get a palindrome (1668661).

The spelling of 1444220 in words is "one million, four hundred forty-four thousand, two hundred twenty".