4321444240 has 80 divisors (see below), whose sum is σ = 10567323648. Its totient is φ = 1640314368.

The previous prime is 4321444177. The next prime is 4321444241. The reversal of 4321444240 is 424441234.

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 = 4321444199 and 4321444208.

It is not an unprimeable number, because it can be changed into a prime (4321444241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224434 + ... + 242926.

Almost surely, 2^4321444240 is an apocalyptic number.

4321444240 is a gapful number since it is divisible by the number (40) 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 4321444240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5283661824).

4321444240 is an abundant number, since it is smaller than the sum of its proper divisors (6245879408).

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

4321444240 is a wasteful number, since it uses less digits than its factorization.

4321444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18656 (or 18650 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 4321444240 is about 65737.6926884417. The cubic root of 4321444240 is about 1628.8320437399.

Adding to 4321444240 its reverse (424441234), we get a palindrome (4745885474).

The spelling of 4321444240 in words is "four billion, three hundred twenty-one million, four hundred forty-four thousand, two hundred forty".