204194780 has 12 divisors (see below), whose sum is σ = 428809080. Its totient is φ = 81677904.

The previous prime is 204194777. The next prime is 204194789. The reversal of 204194780 is 87491402.

204194780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204194780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204194789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5104850 + ... + 5104889.

It is an arithmetic number, because the mean of its divisors is an integer number (35734090).

Almost surely, 2^204194780 is an apocalyptic number.

204194780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204194780 is an abundant number, since it is smaller than the sum of its proper divisors (224614300).

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

204194780 is a wasteful number, since it uses less digits than its factorization.

204194780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209748 (or 10209746 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 204194780 is about 14289.6738941097. The cubic root of 204194780 is about 588.8638289772.

The spelling of 204194780 in words is "two hundred four million, one hundred ninety-four thousand, seven hundred eighty".