2343403440 has 320 divisors, whose sum is σ = 9416064000. Its totient is φ = 535465728.

The previous prime is 2343403423. The next prime is 2343403463. The reversal of 2343403440 is 443043432.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 739299 + ... + 742461.

It is an arithmetic number, because the mean of its divisors is an integer number (29425200).

Almost surely, 2^2343403440 is an apocalyptic number.

2343403440 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 2343403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4708032000).

2343403440 is an abundant number, since it is smaller than the sum of its proper divisors (7072660560).

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

2343403440 is a wasteful number, since it uses less digits than its factorization.

2343403440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

The square root of 2343403440 is about 48408.7124389815. The cubic root of 2343403440 is about 1328.2577371481.

Adding to 2343403440 its reverse (443043432), we get a palindrome (2786446872).

The spelling of 2343403440 in words is "two billion, three hundred forty-three million, four hundred three thousand, four hundred forty".