2340805 has 8 divisors (see below), whose sum is σ = 2885112. Its totient is φ = 1821888.

The previous prime is 2340803. The next prime is 2340823. The reversal of 2340805 is 5080432.

2340805 = 7² + 8² + ... + 191².

It can be written as a sum of positive squares in 4 ways, for example, as 81796 + 2259009 = 286^2 + 1503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2340805 - 2¹ = 2340803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340803) by changing a digit.

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, 6142 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (360639).

2^2340805 is an apocalyptic number.

It is an amenable number.

2340805 is a deficient number, since it is larger than the sum of its proper divisors (544307).

2340805 is a wasteful number, since it uses less digits than its factorization.

2340805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12695.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2340805 is about 1529.9689539334. The cubic root of 2340805 is about 132.7766617489.

The spelling of 2340805 in words is "two million, three hundred forty thousand, eight hundred five".