1444303420 has 72 divisors (see below), whose sum is σ = 3603410496. Its totient is φ = 484638336.

The previous prime is 1444303387. The next prime is 1444303429. The reversal of 1444303420 is 243034441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444303429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30382 + ... + 61738.

It is an arithmetic number, because the mean of its divisors is an integer number (50047368).

Almost surely, 2^1444303420 is an apocalyptic number.

1444303420 is a gapful number since it is divisible by the number (10) 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 1444303420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801705248).

1444303420 is an abundant number, since it is smaller than the sum of its proper divisors (2159107076).

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

1444303420 is a wasteful number, since it uses less digits than its factorization.

1444303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31427 (or 31418 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1444303420 is about 38003.9921587193. The cubic root of 1444303420 is about 1130.3670251631.

Adding to 1444303420 its reverse (243034441), we get a palindrome (1687337861).

The spelling of 1444303420 in words is "one billion, four hundred forty-four million, three hundred three thousand, four hundred twenty".