243243654 has 8 divisors (see below), whose sum is σ = 486487320. Its totient is φ = 81081216.

The previous prime is 243243641. The next prime is 243243673. The reversal of 243243654 is 456342342.

243243654 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

243243654 is an admirable number.

It is a super-2 number, since 2×243243654² = 118334950422543432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20270299 + ... + 20270310.

It is an arithmetic number, because the mean of its divisors is an integer number (60810915).

Almost surely, 2^243243654 is an apocalyptic number.

243243654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243243654 is a wasteful number, since it uses less digits than its factorization.

243243654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40540614.

The product of its digits is 69120, while the sum is 33.

The square root of 243243654 is about 15596.2705157355. The cubic root of 243243654 is about 624.2336454519.

Adding to 243243654 its reverse (456342342), we get a palindrome (699585996).

The spelling of 243243654 in words is "two hundred forty-three million, two hundred forty-three thousand, six hundred fifty-four".