204513420 has 48 divisors (see below), whose sum is σ = 575134560. Its totient is φ = 54299136.

The previous prime is 204513409. The next prime is 204513427. The reversal of 204513420 is 24315402.

It is not an unprimeable number, because it can be changed into a prime (204513427) 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, 6666 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (11981970).

Almost surely, 2^204513420 is an apocalyptic number.

204513420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204513420 is an abundant number, since it is smaller than the sum of its proper divisors (370621140).

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

204513420 is a wasteful number, since it uses less digits than its factorization.

204513420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14874 (or 14872 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 204513420 is about 14300.8188576738. The cubic root of 204513420 is about 589.1699714017.

Adding to 204513420 its reverse (24315402), we get a palindrome (228828822).

It can be divided in two parts, 20451 and 3420, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 204513420 in words is "two hundred four million, five hundred thirteen thousand, four hundred twenty".