243616426 has 8 divisors (see below), whose sum is σ = 386920260. Its totient is φ = 114643008.

The previous prime is 243616421. The next prime is 243616433. The reversal of 243616426 is 624616342.

It can be written as a sum of positive squares in 2 ways, for example, as 242892225 + 724201 = 15585^2 + 851^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 7165189 = 243616426 / (2 + 4 + 3 + 6 + 1 + 6 + 4 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 243616391 and 243616400.

It is not an unprimeable number, because it can be changed into a prime (243616421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582561 + ... + 3582628.

Almost surely, 2^243616426 is an apocalyptic number.

243616426 is a deficient number, since it is larger than the sum of its proper divisors (143303834).

243616426 is a wasteful number, since it uses less digits than its factorization.

243616426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165208.

The product of its digits is 41472, while the sum is 34.

The square root of 243616426 is about 15608.2166181790. The cubic root of 243616426 is about 624.5523629903.

The spelling of 243616426 in words is "two hundred forty-three million, six hundred sixteen thousand, four hundred twenty-six".