2144324440 has 16 divisors (see below), whose sum is σ = 4824730080. Its totient is φ = 857729760.

The previous prime is 2144324419. The next prime is 2144324449. The reversal of 2144324440 is 444234412.

It is a junction number, because it is equal to n+sod(n) for n = 2144324399 and 2144324408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144324449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26804016 + ... + 26804095.

It is an arithmetic number, because the mean of its divisors is an integer number (301545630).

Almost surely, 2^2144324440 is an apocalyptic number.

2144324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144324440 is an abundant number, since it is smaller than the sum of its proper divisors (2680405640).

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

2144324440 is a wasteful number, since it uses less digits than its factorization.

2144324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53608122 (or 53608118 counting only the distinct ones).

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

The square root of 2144324440 is about 46306.8508970325. The cubic root of 2144324440 is about 1289.5261845817.

Adding to 2144324440 its reverse (444234412), we get a palindrome (2588558852).

The spelling of 2144324440 in words is "two billion, one hundred forty-four million, three hundred twenty-four thousand, four hundred forty".