243783426 has 16 divisors (see below), whose sum is σ = 498906144. Its totient is φ = 79371264.

The previous prime is 243783409. The next prime is 243783431. The reversal of 243783426 is 624387342.

243783426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×243783426³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472191 + ... + 472706.

It is an arithmetic number, because the mean of its divisors is an integer number (31181634).

Almost surely, 2^243783426 is an apocalyptic number.

243783426 is an abundant number, since it is smaller than the sum of its proper divisors (255122718).

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

243783426 is a wasteful number, since it uses less digits than its factorization.

243783426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944945.

The product of its digits is 193536, while the sum is 39.

The square root of 243783426 is about 15613.5654480327. The cubic root of 243783426 is about 624.6950414113.

The spelling of 243783426 in words is "two hundred forty-three million, seven hundred eighty-three thousand, four hundred twenty-six".