1440230344 has 72 divisors (see below), whose sum is σ = 3337234290. Its totient is φ = 580887552.

The previous prime is 1440230339. The next prime is 1440230369. The reversal of 1440230344 is 4430320441.

It can be written as a sum of positive squares in 3 ways, for example, as 1394126244 + 46104100 = 37338^2 + 6790^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106932 + ... + 119644.

Almost surely, 2^1440230344 is an apocalyptic number.

1440230344 is a gapful number since it is divisible by the number (14) 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 1440230344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668617145).

1440230344 is an abundant number, since it is smaller than the sum of its proper divisors (1897003946).

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

1440230344 is a wasteful number, since it uses less digits than its factorization.

1440230344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767 (or 12739 counting only the distinct ones).

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

The square root of 1440230344 is about 37950.3668493468. The cubic root of 1440230344 is about 1129.3034431145.

Adding to 1440230344 its reverse (4430320441), we get a palindrome (5870550785).

The spelling of 1440230344 in words is "one billion, four hundred forty million, two hundred thirty thousand, three hundred forty-four".