208888381 has 8 divisors (see below), whose sum is σ = 225078560. Its totient is φ = 192715632.

The previous prime is 208888373. The next prime is 208888391. The reversal of 208888381 is 183888802.

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

It is a cyclic number.

It is not a de Polignac number, because 208888381 - 2³ = 208888373 is a prime.

It is a super-2 number, since 2×208888381² = 87268711433602322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208888321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31546 + ... + 37588.

It is an arithmetic number, because the mean of its divisors is an integer number (28134820).

Almost surely, 2^208888381 is an apocalyptic number.

It is an amenable number.

208888381 is a deficient number, since it is larger than the sum of its proper divisors (16190179).

208888381 is a wasteful number, since it uses less digits than its factorization.

208888381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715.

The product of its (nonzero) digits is 196608, while the sum is 46.

The square root of 208888381 is about 14452.9713553996. The cubic root of 208888381 is about 593.3415493188.

The spelling of 208888381 in words is "two hundred eight million, eight hundred eighty-eight thousand, three hundred eighty-one".