208120881 has 8 divisors (see below), whose sum is σ = 277660864. Its totient is φ = 138664080.

The previous prime is 208120853. The next prime is 208120897. The reversal of 208120881 is 188021802.

208120881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 208120881 - 2²⁵ = 174566449 is a prime.

It is a super-2 number, since 2×208120881² = 86628602216432322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208120811) 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, 14701 + ... + 25146.

It is an arithmetic number, because the mean of its divisors is an integer number (34707608).

Almost surely, 2^208120881 is an apocalyptic number.

It is an amenable number.

208120881 is a deficient number, since it is larger than the sum of its proper divisors (69539983).

208120881 is a wasteful number, since it uses less digits than its factorization.

208120881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41591.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 208120881 is about 14426.3952878049. The cubic root of 208120881 is about 592.6139701356.

The spelling of 208120881 in words is "two hundred eight million, one hundred twenty thousand, eight hundred eighty-one".