208284172 has 12 divisors (see below), whose sum is σ = 364638456. Its totient is φ = 104101760.

The previous prime is 208284169. The next prime is 208284179. The reversal of 208284172 is 271482802.

It is not an unprimeable number, because it can be changed into a prime (208284179) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3603 + ... + 20725.

It is an arithmetic number, because the mean of its divisors is an integer number (30386538).

Almost surely, 2^208284172 is an apocalyptic number.

It is an amenable number.

208284172 is a deficient number, since it is larger than the sum of its proper divisors (156354284).

208284172 is a wasteful number, since it uses less digits than its factorization.

208284172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20168 (or 20166 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 208284172 is about 14432.0536307208. The cubic root of 208284172 is about 592.7689173154.

The spelling of 208284172 in words is "two hundred eight million, two hundred eighty-four thousand, one hundred seventy-two".