240845 has 16 divisors (see below), whose sum is σ = 328320. Its totient is φ = 168000.

The previous prime is 240841. The next prime is 240853. The reversal of 240845 is 548042.

It is not a de Polignac number, because 240845 - 2² = 240841 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 240845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240841) 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, 1520 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2²⁴⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

240845 is a deficient number, since it is larger than the sum of its proper divisors (87475).

240845 is a wasteful number, since it uses less digits than its factorization.

240845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 240845 is about 490.7596152904. The cubic root of 240845 is about 62.2174983422.

Adding to 240845 its reverse (548042), we get a palindrome (788887).

The spelling of 240845 in words is "two hundred forty thousand, eight hundred forty-five".