204401445 has 16 divisors (see below), whose sum is σ = 337592832. Its totient is φ = 105497280.

The previous prime is 204401419. The next prime is 204401447. The reversal of 204401445 is 544104402.

It is a happy number.

It is not a de Polignac number, because 204401445 - 2⁶ = 204401381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204401447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219322 + ... + 220251.

It is an arithmetic number, because the mean of its divisors is an integer number (21099552).

Almost surely, 2^204401445 is an apocalyptic number.

It is an amenable number.

204401445 is a deficient number, since it is larger than the sum of its proper divisors (133191387).

204401445 is a wasteful number, since it uses less digits than its factorization.

204401445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439612.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 204401445 is about 14296.9033360375. The cubic root of 204401445 is about 589.0624245040.

Adding to 204401445 its reverse (544104402), we get a palindrome (748505847).

The spelling of 204401445 in words is "two hundred four million, four hundred one thousand, four hundred forty-five".