240189 has 12 divisors (see below), whose sum is σ = 339936. Its totient is φ = 150568.

The previous prime is 240173. The next prime is 240197. The reversal of 240189 is 981042.

It is not a de Polignac number, because 240189 - 2⁴ = 240173 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240109) 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 11 ways as a sum of consecutive naturals, for example, 4042 + ... + 4100.

It is an arithmetic number, because the mean of its divisors is an integer number (28328).

2²⁴⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

240189 is a deficient number, since it is larger than the sum of its proper divisors (99747).

240189 is an equidigital number, since it uses as much as digits as its factorization.

240189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 240189 is about 490.0908079122. The cubic root of 240189 is about 62.1609588095.

The spelling of 240189 in words is "two hundred forty thousand, one hundred eighty-nine".