208106386 has 8 divisors (see below), whose sum is σ = 315667260. Its totient is φ = 102883968.

The previous prime is 208106383. The next prime is 208106387. The reversal of 208106386 is 683601802.

It can be written as a sum of positive squares in 2 ways, for example, as 199515625 + 8590761 = 14125^2 + 2931^2 .

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 (208106383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584391 + ... + 584746.

Almost surely, 2^208106386 is an apocalyptic number.

208106386 is a deficient number, since it is larger than the sum of its proper divisors (107560874).

208106386 is a wasteful number, since it uses less digits than its factorization.

208106386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169228.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 208106386 is about 14425.8929013077. The cubic root of 208106386 is about 592.6002118830.

The spelling of 208106386 in words is "two hundred eight million, one hundred six thousand, three hundred eighty-six".