204401412 has 18 divisors (see below), whose sum is σ = 516681438. Its totient is φ = 68133792.

The previous prime is 204401381. The next prime is 204401419. The reversal of 204401412 is 214104402.

It can be written as a sum of positive squares in only one way, i.e., 170459136 + 33942276 = 13056^2 + 5826^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (204401419) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2838873 + ... + 2838944.

Almost surely, 2^204401412 is an apocalyptic number.

It is an amenable number.

204401412 is an abundant number, since it is smaller than the sum of its proper divisors (312280026).

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

204401412 is a wasteful number, since it uses less digits than its factorization.

204401412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677827 (or 5677822 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 204401412 is about 14296.9021819414. The cubic root of 204401412 is about 589.0623928032.

Adding to 204401412 its reverse (214104402), we get a palindrome (418505814).

The spelling of 204401412 in words is "two hundred four million, four hundred one thousand, four hundred twelve".