204140020 has 48 divisors (see below), whose sum is σ = 491154048. Its totient is φ = 69816960.

The previous prime is 204140017. The next prime is 204140023. The reversal of 204140020 is 20041402.

It is an interprime number because it is at equal distance from previous prime (204140017) and next prime (204140023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204140023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62959 + ... + 66121.

It is an arithmetic number, because the mean of its divisors is an integer number (10232376).

Almost surely, 2^204140020 is an apocalyptic number.

204140020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204140020 is an abundant number, since it is smaller than the sum of its proper divisors (287014028).

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

204140020 is a wasteful number, since it uses less digits than its factorization.

204140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 204140020 is about 14287.7576967136. The cubic root of 204140020 is about 588.8111846895.

Adding to 204140020 its reverse (20041402), we get a palindrome (224181422).

The spelling of 204140020 in words is "two hundred four million, one hundred forty thousand, twenty".