204191016 has 16 divisors (see below), whose sum is σ = 510477600. Its totient is φ = 68063664.

The previous prime is 204191003. The next prime is 204191021. The reversal of 204191016 is 610191402.

It is a super-2 number, since 2×204191016² = 83387942030224512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8507959 = 204191016 / (2 + 0 + 4 + 1 + 9 + 1 + 0 + 1 + 6).

It is an unprimeable number.

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, 4253956 + ... + 4254003.

It is an arithmetic number, because the mean of its divisors is an integer number (31904850).

Almost surely, 2^204191016 is an apocalyptic number.

204191016 is the 9038-th centered pentagonal number.

It is an amenable number.

204191016 is an abundant number, since it is smaller than the sum of its proper divisors (306286584).

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

204191016 is a wasteful number, since it uses less digits than its factorization.

204191016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507968 (or 8507964 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 204191016 is about 14289.5421900073. The cubic root of 204191016 is about 588.8602107047.

The spelling of 204191016 in words is "two hundred four million, one hundred ninety-one thousand, sixteen".