240545985 has 32 divisors (see below), whose sum is σ = 406133760. Its totient is φ = 121238208.

The previous prime is 240545933. The next prime is 240545989. The reversal of 240545985 is 589545042.

It is not a de Polignac number, because 240545985 - 2⁷ = 240545857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240545989) 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 31 ways as a sum of consecutive naturals, for example, 155124 + ... + 156666.

It is an arithmetic number, because the mean of its divisors is an integer number (12691680).

Almost surely, 2^240545985 is an apocalyptic number.

It is an amenable number.

240545985 is a deficient number, since it is larger than the sum of its proper divisors (165587775).

240545985 is a wasteful number, since it uses less digits than its factorization.

240545985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 240545985 is about 15509.5449643115. The cubic root of 240545985 is about 621.9173949364.

The spelling of 240545985 in words is "two hundred forty million, five hundred forty-five thousand, nine hundred eighty-five".