208420266 has 16 divisors (see below), whose sum is σ = 416995488. Its totient is φ = 69447600.

The previous prime is 208420259. The next prime is 208420279. The reversal of 208420266 is 662024802.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18381 + ... + 27471.

It is an arithmetic number, because the mean of its divisors is an integer number (26062218).

Almost surely, 2^208420266 is an apocalyptic number.

208420266 is an abundant number, since it is smaller than the sum of its proper divisors (208575222).

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

208420266 is a wasteful number, since it uses less digits than its factorization.

208420266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12917.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 208420266 is about 14436.7678515657. The cubic root of 208420266 is about 592.8979953407.

The spelling of 208420266 in words is "two hundred eight million, four hundred twenty thousand, two hundred sixty-six".