208381086 has 20 divisors (see below), whose sum is σ = 466928352. Its totient is φ = 69460308.

The previous prime is 208381031. The next prime is 208381091. The reversal of 208381086 is 680183802.

It is a self number, because there is not a number n which added to its sum of digits gives 208381086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 642990 + ... + 643313.

Almost surely, 2^208381086 is an apocalyptic number.

208381086 is an abundant number, since it is smaller than the sum of its proper divisors (258547266).

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

208381086 is a wasteful number, since it uses less digits than its factorization.

208381086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286317 (or 1286308 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 208381086 is about 14435.4108358578. The cubic root of 208381086 is about 592.8608409256.

The spelling of 208381086 in words is "two hundred eight million, three hundred eighty-one thousand, eighty-six".