204245644 has 12 divisors (see below), whose sum is σ = 365035104. Its totient is φ = 99949904.

The previous prime is 204245609. The next prime is 204245647. The reversal of 204245644 is 446542402.

It is a happy number.

204245644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204245647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543019 + ... + 543394.

It is an arithmetic number, because the mean of its divisors is an integer number (30419592).

Almost surely, 2^204245644 is an apocalyptic number.

It is an amenable number.

204245644 is a deficient number, since it is larger than the sum of its proper divisors (160789460).

204245644 is a wasteful number, since it uses less digits than its factorization.

204245644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086464 (or 1086462 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 204245644 is about 14291.4535299948. The cubic root of 204245644 is about 588.9127193605.

The spelling of 204245644 in words is "two hundred four million, two hundred forty-five thousand, six hundred forty-four".