243830 has 16 divisors (see below), whose sum is σ = 451440. Its totient is φ = 94752.

The previous prime is 243829. The next prime is 243839. The reversal of 243830 is 38342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243839) 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 7 ways as a sum of consecutive naturals, for example, 41 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (28215).

2²⁴³⁸³⁰ is an apocalyptic number.

243830 is a deficient number, since it is larger than the sum of its proper divisors (207610).

243830 is a wasteful number, since it uses less digits than its factorization.

243830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 243830 is about 493.7914539560. The cubic root of 243830 is about 62.4734820837.

The spelling of 243830 in words is "two hundred forty-three thousand, eight hundred thirty".