204780378 has 16 divisors (see below), whose sum is σ = 446793696. Its totient is φ = 62054640.

The previous prime is 204780361. The next prime is 204780437. The reversal of 204780378 is 873087402.

204780378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1551301 + ... + 1551432.

It is an arithmetic number, because the mean of its divisors is an integer number (27924606).

Almost surely, 2^204780378 is an apocalyptic number.

204780378 is an abundant number, since it is smaller than the sum of its proper divisors (242013318).

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

204780378 is a wasteful number, since it uses less digits than its factorization.

204780378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102749.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 204780378 is about 14310.1494751103. The cubic root of 204780378 is about 589.4262141640.

The spelling of 204780378 in words is "two hundred four million, seven hundred eighty thousand, three hundred seventy-eight".