1440240224 has 48 divisors (see below), whose sum is σ = 2950531920. Its totient is φ = 691192320.

The previous prime is 1440240199. The next prime is 1440240227. The reversal of 1440240224 is 4220420441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440240224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440240227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156059 + ... + 165029.

It is an arithmetic number, because the mean of its divisors is an integer number (61469415).

Almost surely, 2^1440240224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440240224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475265960).

1440240224 is an abundant number, since it is smaller than the sum of its proper divisors (1510291696).

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

1440240224 is a wasteful number, since it uses less digits than its factorization.

1440240224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183 (or 9175 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1440240224 is about 37950.4970191432. The cubic root of 1440240224 is about 1129.3060254543.

Adding to 1440240224 its reverse (4220420441), we get a palindrome (5660660665).

The spelling of 1440240224 in words is "one billion, four hundred forty million, two hundred forty thousand, two hundred twenty-four".