2340440240 has 20 divisors (see below), whose sum is σ = 5441523744. Its totient is φ = 936176064.

The previous prime is 2340440189. The next prime is 2340440251. The reversal of 2340440240 is 420440432.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2340440240² = 10955321034022515200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14627672 + ... + 14627831.

Almost surely, 2^2340440240 is an apocalyptic number.

2340440240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2340440240 is an abundant number, since it is smaller than the sum of its proper divisors (3101083504).

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

2340440240 is a wasteful number, since it uses less digits than its factorization.

2340440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29255516 (or 29255510 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 2340440240 is about 48378.0966967490. The cubic root of 2340440240 is about 1327.6976467278.

Adding to 2340440240 its reverse (420440432), we get a palindrome (2760880672).

The spelling of 2340440240 in words is "two billion, three hundred forty million, four hundred forty thousand, two hundred forty".