204443140 has 72 divisors (see below), whose sum is σ = 484456896. Its totient is φ = 71870400.

The previous prime is 204443131. The next prime is 204443177. The reversal of 204443140 is 41344402.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210937 + ... + 211903.

It is an arithmetic number, because the mean of its divisors is an integer number (6728568).

Almost surely, 2^204443140 is an apocalyptic number.

204443140 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 204443140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242228448).

204443140 is an abundant number, since it is smaller than the sum of its proper divisors (280013756).

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

204443140 is a wasteful number, since it uses less digits than its factorization.

204443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 204443140 is about 14298.3614445852. The cubic root of 204443140 is about 589.1024752449.

Adding to 204443140 its reverse (41344402), we get a palindrome (245787542).

It can be divided in two parts, 204 and 443140, that added together give a palindrome (443344).

The spelling of 204443140 in words is "two hundred four million, four hundred forty-three thousand, one hundred forty".