204147420 has 96 divisors (see below), whose sum is σ = 585596928. Its totient is φ = 53125632.

The previous prime is 204147413. The next prime is 204147421. The reversal of 204147420 is 24741402.

204147420 = T₅₄ + T₅₅ + ... + T₁₀₆₉.

204147420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204147421) 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, 556077 + ... + 556443.

It is an arithmetic number, because the mean of its divisors is an integer number (6099968).

Almost surely, 2^204147420 is an apocalyptic number.

204147420 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 204147420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292798464).

204147420 is an abundant number, since it is smaller than the sum of its proper divisors (381449508).

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

204147420 is a wasteful number, since it uses less digits than its factorization.

204147420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 204147420 is about 14288.0166573251. The cubic root of 204147420 is about 588.8182993326.

Adding to 204147420 its reverse (24741402), we get a palindrome (228888822).

The spelling of 204147420 in words is "two hundred four million, one hundred forty-seven thousand, four hundred twenty".