243416 has 8 divisors (see below), whose sum is σ = 456420. Its totient is φ = 121704.

The previous prime is 243403. The next prime is 243421. The reversal of 243416 is 614342.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2⁹ + 4 + 4⁸ + 3¹¹ + 1 + 6³ .

It is a nialpdrome in base 8.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15206 + ... + 15221.

2²⁴³⁴¹⁶ is an apocalyptic number.

It is an amenable number.

243416 is a deficient number, since it is larger than the sum of its proper divisors (213004).

243416 is a wasteful number, since it uses less digits than its factorization.

243416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30433 (or 30429 counting only the distinct ones).

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

The square root of 243416 is about 493.3720705512. The cubic root of 243416 is about 62.4381040558.

Adding to 243416 its reverse (614342), we get a palindrome (857758).

The spelling of 243416 in words is "two hundred forty-three thousand, four hundred sixteen".