208920873 has 16 divisors (see below), whose sum is σ = 328626176. Its totient is φ = 115531920.

The previous prime is 208920869. The next prime is 208920883. The reversal of 208920873 is 378029802.

208920873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208920873 - 2² = 208920869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208920883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159811 + ... + 161112.

It is an arithmetic number, because the mean of its divisors is an integer number (20539136).

Almost surely, 2^208920873 is an apocalyptic number.

It is an amenable number.

208920873 is a deficient number, since it is larger than the sum of its proper divisors (119705303).

208920873 is a wasteful number, since it uses less digits than its factorization.

208920873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320964.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 208920873 is about 14454.0953712088. The cubic root of 208920873 is about 593.3723119268.

The spelling of 208920873 in words is "two hundred eight million, nine hundred twenty thousand, eight hundred seventy-three".