204340020 has 48 divisors (see below), whose sum is σ = 584333568. Its totient is φ = 53330560.

The previous prime is 204339997. The next prime is 204340039. The reversal of 204340020 is 20043402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33411 + ... + 39050.

It is an arithmetic number, because the mean of its divisors is an integer number (12173616).

Almost surely, 2^204340020 is an apocalyptic number.

204340020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204340020 is an abundant number, since it is smaller than the sum of its proper divisors (379993548).

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

204340020 is a wasteful number, since it uses less digits than its factorization.

204340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72520 (or 72518 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 204340020 is about 14294.7549821604. The cubic root of 204340020 is about 589.0034119001.

Adding to 204340020 its reverse (20043402), we get a palindrome (224383422).

The spelling of 204340020 in words is "two hundred four million, three hundred forty thousand, twenty".