204163680 has 96 divisors (see below), whose sum is σ = 735001344. Its totient is φ = 46665216.

The previous prime is 204163667. The next prime is 204163703. The reversal of 204163680 is 86361402.

204163680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×204163680² = 83365616462284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27022 + ... + 33741.

It is an arithmetic number, because the mean of its divisors is an integer number (7656264).

Almost surely, 2^204163680 is an apocalyptic number.

204163680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204163680 is an abundant number, since it is smaller than the sum of its proper divisors (530837664).

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

204163680 is a wasteful number, since it uses less digits than its factorization.

204163680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60788 (or 60780 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 204163680 is about 14288.5856542906. The cubic root of 204163680 is about 588.8339317146.

The spelling of 204163680 in words is "two hundred four million, one hundred sixty-three thousand, six hundred eighty".