204080016 has 80 divisors (see below), whose sum is σ = 615389184. Its totient is φ = 57063552.

The previous prime is 204080003. The next prime is 204080017. The reversal of 204080016 is 610080402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 204079974 and 204080001.

It is not an unprimeable number, because it can be changed into a prime (204080017) 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, 9331 + ... + 22253.

Almost surely, 2^204080016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204080016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307694592).

204080016 is an abundant number, since it is smaller than the sum of its proper divisors (411309168).

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

204080016 is a wasteful number, since it uses less digits than its factorization.

204080016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988 (or 12982 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 204080016 is about 14285.6577027451. The cubic root of 204080016 is about 588.7534881984.

The spelling of 204080016 in words is "two hundred four million, eighty thousand, sixteen".