2144233440 has 72 divisors (see below), whose sum is σ = 7317201528. Its totient is φ = 571795200.

The previous prime is 2144233433. The next prime is 2144233459. The reversal of 2144233440 is 443324412.

It is a happy number.

2144233440 is a `hidden beast` number, since 214 + 4 + 2 + 3 + 3 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 743086 + ... + 745965.

It is an arithmetic number, because the mean of its divisors is an integer number (101627799).

Almost surely, 2^2144233440 is an apocalyptic number.

2144233440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144233440 is an abundant number, since it is smaller than the sum of its proper divisors (5172968088).

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

2144233440 is a wasteful number, since it uses less digits than its factorization.

2144233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489072 (or 1489061 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2144233440 is about 46305.8683106148. The cubic root of 2144233440 is about 1289.5079428548.

Adding to 2144233440 its reverse (443324412), we get a palindrome (2587557852).

The spelling of 2144233440 in words is "two billion, one hundred forty-four million, two hundred thirty-three thousand, four hundred forty".