2444440240 has 80 divisors (see below), whose sum is σ = 6208459776. Its totient is φ = 887673600.

The previous prime is 2444440223. The next prime is 2444440267. The reversal of 2444440240 is 420444442.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2444440199 and 2444440208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870679 + ... + 873481.

Almost surely, 2^2444440240 is an apocalyptic number.

2444440240 is a gapful number since it is divisible by the number (20) 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 2444440240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3104229888).

2444440240 is an abundant number, since it is smaller than the sum of its proper divisors (3764019536).

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

2444440240 is a wasteful number, since it uses less digits than its factorization.

2444440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818 (or 3812 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 2444440240 is about 49441.2807277481. The cubic root of 2444440240 is about 1347.0792345478.

Adding to 2444440240 its reverse (420444442), we get a palindrome (2864884682).

It can be divided in two parts, 24444402 and 40, that added together give a palindrome (24444442).

The spelling of 2444440240 in words is "two billion, four hundred forty-four million, four hundred forty thousand, two hundred forty".