2305323440 has 40 divisors (see below), whose sum is σ = 6125575200. Its totient is φ = 790396416.

The previous prime is 2305323421. The next prime is 2305323451. The reversal of 2305323440 is 443235032.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057765 + ... + 2058884.

It is an arithmetic number, because the mean of its divisors is an integer number (153139380).

Almost surely, 2^2305323440 is an apocalyptic number.

2305323440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2305323440 is an abundant number, since it is smaller than the sum of its proper divisors (3820251760).

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

2305323440 is a wasteful number, since it uses less digits than its factorization.

2305323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116669 (or 4116663 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 2305323440 is about 48013.7838542225. The cubic root of 2305323440 is about 1321.0237390347.

Adding to 2305323440 its reverse (443235032), we get a palindrome (2748558472).

The spelling of 2305323440 in words is "two billion, three hundred five million, three hundred twenty-three thousand, four hundred forty".