204115144 has 32 divisors (see below), whose sum is σ = 391248000. Its totient is φ = 99807552.

The previous prime is 204115139. The next prime is 204115147. The reversal of 204115144 is 441511402.

It is not an unprimeable number, because it can be changed into a prime (204115147) 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 7 ways as a sum of consecutive naturals, for example, 67407 + ... + 70369.

It is an arithmetic number, because the mean of its divisors is an integer number (12226500).

Almost surely, 2^204115144 is an apocalyptic number.

It is an amenable number.

204115144 is a deficient number, since it is larger than the sum of its proper divisors (187132856).

204115144 is a wasteful number, since it uses less digits than its factorization.

204115144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 204115144 is about 14286.8871347120. The cubic root of 204115144 is about 588.7872666911.

Adding to 204115144 its reverse (441511402), we get a palindrome (645626546).

The spelling of 204115144 in words is "two hundred four million, one hundred fifteen thousand, one hundred forty-four".