204344780 has 12 divisors (see below), whose sum is σ = 429124080. Its totient is φ = 81737904.

The previous prime is 204344773. The next prime is 204344783. The reversal of 204344780 is 87443402.

It is a super-2 number, since 2×204344780² = 83513578226496800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (204344783) 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 3 ways as a sum of consecutive naturals, for example, 5108600 + ... + 5108639.

It is an arithmetic number, because the mean of its divisors is an integer number (35760340).

Almost surely, 2^204344780 is an apocalyptic number.

204344780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204344780 is an abundant number, since it is smaller than the sum of its proper divisors (224779300).

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

204344780 is a wasteful number, since it uses less digits than its factorization.

204344780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217248 (or 10217246 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 204344780 is about 14294.9214758249. The cubic root of 204344780 is about 589.0079853793.

The spelling of 204344780 in words is "two hundred four million, three hundred forty-four thousand, seven hundred eighty".