204420260 has 96 divisors (see below), whose sum is σ = 486186624. Its totient is φ = 71552000.

The previous prime is 204420241. The next prime is 204420269. The reversal of 204420260 is 62024402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (204420269) 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 31 ways as a sum of consecutive naturals, for example, 1181534 + ... + 1181706.

It is an arithmetic number, because the mean of its divisors is an integer number (5064444).

Almost surely, 2^204420260 is an apocalyptic number.

204420260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204420260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243093312).

204420260 is an abundant number, since it is smaller than the sum of its proper divisors (281766364).

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

204420260 is a wasteful number, since it uses less digits than its factorization.

204420260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204420260 is about 14297.5613305207. The cubic root of 204420260 is about 589.0804982012.

Adding to 204420260 its reverse (62024402), we get a palindrome (266444662).

The spelling of 204420260 in words is "two hundred four million, four hundred twenty thousand, two hundred sixty".