243604026 has 24 divisors (see below), whose sum is σ = 531176724. Its totient is φ = 80683200.

The previous prime is 243604007. The next prime is 243604043. The reversal of 243604026 is 620406342.

243604026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213890625 + 29713401 = 14625^2 + 5451^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 40275 + ... + 45926.

Almost surely, 2^243604026 is an apocalyptic number.

243604026 is an abundant number, since it is smaller than the sum of its proper divisors (287572698).

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

243604026 is a wasteful number, since it uses less digits than its factorization.

243604026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86366 (or 86363 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 243604026 is about 15607.8193864486. The cubic root of 243604026 is about 624.5417663038.

The spelling of 243604026 in words is "two hundred forty-three million, six hundred four thousand, twenty-six".