1444224240 has 120 divisors (see below), whose sum is σ = 4859541648. Its totient is φ = 384384000.

The previous prime is 1444224233. The next prime is 1444224247. The reversal of 1444224240 is 424224441.

It is an interprime number because it is at equal distance from previous prime (1444224233) and next prime (1444224247).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444224247) 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, 442615 + ... + 445865.

Almost surely, 2^1444224240 is an apocalyptic number.

1444224240 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 1444224240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2429770824).

1444224240 is an abundant number, since it is smaller than the sum of its proper divisors (3415317408).

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

1444224240 is a wasteful number, since it uses less digits than its factorization.

1444224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887 (or 3878 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1444224240 is about 38002.9504117772. The cubic root of 1444224240 is about 1130.3463683548.

Adding to 1444224240 its reverse (424224441), we get a palindrome (1868448681).

The spelling of 1444224240 in words is "one billion, four hundred forty-four million, two hundred twenty-four thousand, two hundred forty".