204381392 has 20 divisors (see below), whose sum is σ = 405648516. Its totient is φ = 99697920.

The previous prime is 204381389. The next prime is 204381407. The reversal of 204381392 is 293183402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9388096 + 194993296 = 3064^2 + 13964^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 155123 + ... + 156434.

Almost surely, 2^204381392 is an apocalyptic number.

It is an amenable number.

204381392 is a deficient number, since it is larger than the sum of its proper divisors (201267124).

204381392 is a wasteful number, since it uses less digits than its factorization.

204381392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311606 (or 311600 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 204381392 is about 14296.2020131222. The cubic root of 204381392 is about 589.0431603625.

The spelling of 204381392 in words is "two hundred four million, three hundred eighty-one thousand, three hundred ninety-two".