243630478 has 32 divisors (see below), whose sum is σ = 453942720. Its totient is φ = 95489280.

The previous prime is 243630473. The next prime is 243630493. The reversal of 243630478 is 874036342.

It is a happy number.

It is a Smith number, since the sum of its digits (37) 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 not an unprimeable number, because it can be changed into a prime (243630473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13698 + ... + 25978.

It is an arithmetic number, because the mean of its divisors is an integer number (14185710).

Almost surely, 2^243630478 is an apocalyptic number.

243630478 is a deficient number, since it is larger than the sum of its proper divisors (210312242).

243630478 is a wasteful number, since it uses less digits than its factorization.

243630478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12412.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 243630478 is about 15608.6667592078. Note that the first 3 decimals coincide. The cubic root of 243630478 is about 624.5643709943.

The spelling of 243630478 in words is "two hundred forty-three million, six hundred thirty thousand, four hundred seventy-eight".