204641440 has 48 divisors (see below), whose sum is σ = 484323840. Its totient is φ = 81711360.

The previous prime is 204641417. The next prime is 204641467. The reversal of 204641440 is 44146402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165625 + ... + 166855.

It is an arithmetic number, because the mean of its divisors is an integer number (10090080).

Almost surely, 2^204641440 is an apocalyptic number.

204641440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204641440 is an abundant number, since it is smaller than the sum of its proper divisors (279682400).

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

204641440 is a wasteful number, since it uses less digits than its factorization.

204641440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 204641440 is about 14305.2941249035. The cubic root of 204641440 is about 589.2928807069.

Adding to 204641440 its reverse (44146402), we get a palindrome (248787842).

It can be divided in two parts, 20464 and 1440, that added together give a square (21904 = 148²).

The spelling of 204641440 in words is "two hundred four million, six hundred forty-one thousand, four hundred forty".