204479478 has 40 divisors (see below), whose sum is σ = 523643472. Its totient is φ = 58422384.

The previous prime is 204479477. The next prime is 204479537. The reversal of 204479478 is 874974402.

204479478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204479477) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89025 + ... + 91292.

Almost surely, 2^204479478 is an apocalyptic number.

204479478 is an abundant number, since it is smaller than the sum of its proper divisors (319163994).

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

204479478 is a wasteful number, since it uses less digits than its factorization.

204479478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180338 (or 180329 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 204479478 is about 14299.6320931694. The cubic root of 204479478 is about 589.1373758006.

The spelling of 204479478 in words is "two hundred four million, four hundred seventy-nine thousand, four hundred seventy-eight".