243056 has 20 divisors (see below), whose sum is σ = 514104. Its totient is φ = 110400.

The previous prime is 243031. The next prime is 243073. The reversal of 243056 is 650342.

It is a d-powerful number, because it can be written as 2⁵ + 4⁸ + 0 + 3¹¹ + 5³ + 6³ .

It is a congruent number.

It is an unprimeable number.

243056 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515 + ... + 866.

2²⁴³⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

243056 is an abundant number, since it is smaller than the sum of its proper divisors (271048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243056 is a wasteful number, since it uses less digits than its factorization.

243056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 243056 is about 493.0070993404. The cubic root of 243056 is about 62.4073079322.

Adding to 243056 its reverse (650342), we get a palindrome (893398).

The spelling of 243056 in words is "two hundred forty-three thousand, fifty-six".