208730 has 8 divisors (see below), whose sum is σ = 375732. Its totient is φ = 83488.

The previous prime is 208729. The next prime is 208739. The reversal of 208730 is 37802.

It can be written as a sum of positive squares in 2 ways, for example, as 203401 + 5329 = 451^2 + 73^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (208739) 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, 10427 + ... + 10446.

2²⁰⁸⁷³⁰ is an apocalyptic number.

208730 is a deficient number, since it is larger than the sum of its proper divisors (167002).

208730 is a wasteful number, since it uses less digits than its factorization.

208730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20880.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 208730 is about 456.8697845120. The cubic root of 208730 is about 59.3191552483.

The spelling of 208730 in words is "two hundred eight thousand, seven hundred thirty".