204224140 has 12 divisors (see below), whose sum is σ = 428870736. Its totient is φ = 81689648.

The previous prime is 204224129. The next prime is 204224149. The reversal of 204224140 is 41422402.

It is not an unprimeable number, because it can be changed into a prime (204224149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105584 + ... + 5105623.

It is an arithmetic number, because the mean of its divisors is an integer number (35739228).

Almost surely, 2^204224140 is an apocalyptic number.

204224140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204224140 is an abundant number, since it is smaller than the sum of its proper divisors (224646596).

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

204224140 is a wasteful number, since it uses less digits than its factorization.

204224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211216 (or 10211214 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 204224140 is about 14290.7011724408. The cubic root of 204224140 is about 588.8920507458.

Adding to 204224140 its reverse (41422402), we get a palindrome (245646542).

The spelling of 204224140 in words is "two hundred four million, two hundred twenty-four thousand, one hundred forty".