2345840 has 80 divisors (see below), whose sum is σ = 6428160. Its totient is φ = 779520.

The previous prime is 2345831. The next prime is 2345843. The reversal of 2345840 is 485432.

2345840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2345843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33005 + ... + 33075.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2^2345840 is an apocalyptic number.

2345840 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 2345840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214080).

2345840 is an abundant number, since it is smaller than the sum of its proper divisors (4082320).

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

2345840 is a wasteful number, since it uses less digits than its factorization.

2345840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2345840 is about 1531.6135282766. The cubic root of 2345840 is about 132.8717930868.

The spelling of 2345840 in words is "two million, three hundred forty-five thousand, eight hundred forty".