211730208 has 48 divisors (see below), whose sum is σ = 556577280. Its totient is φ = 70477056.

The previous prime is 211730201. The next prime is 211730227. The reversal of 211730208 is 802037112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (211730201) 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, 103338 + ... + 105366.

It is an arithmetic number, because the mean of its divisors is an integer number (11595360).

Almost surely, 2^211730208 is an apocalyptic number.

It is an amenable number.

211730208 is an abundant number, since it is smaller than the sum of its proper divisors (344847072).

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

211730208 is a wasteful number, since it uses less digits than its factorization.

211730208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 211730208 is about 14550.9521337952. The cubic root of 211730208 is about 596.0201485614.

The spelling of 211730208 in words is "two hundred eleven million, seven hundred thirty thousand, two hundred eight".