2340439920 has 720 divisors, whose sum is σ = 10250385600. Its totient is φ = 493807104.

The previous prime is 2340439903. The next prime is 2340439939. The reversal of 2340439920 is 299340432.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 180033834 + ... + 180033846.

Almost surely, 2^2340439920 is an apocalyptic number.

2340439920 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 2340439920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5125192800).

2340439920 is an abundant number, since it is smaller than the sum of its proper divisors (7909945680).

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

2340439920 is an frugal number, since it uses more digits than its factorization.

2340439920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2340439920 is about 48378.0933894671. The cubic root of 2340439920 is about 1327.6975862173.

The spelling of 2340439920 in words is "two billion, three hundred forty million, four hundred thirty-nine thousand, nine hundred twenty".