211608992 has 48 divisors (see below), whose sum is σ = 481078080. Its totient is φ = 89745408.

The previous prime is 211608961. The next prime is 211609009. The reversal of 211608992 is 299806112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16859 + ... + 26597.

It is an arithmetic number, because the mean of its divisors is an integer number (10022460).

Almost surely, 2^211608992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211608992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240539040).

211608992 is an abundant number, since it is smaller than the sum of its proper divisors (269469088).

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

211608992 is an equidigital number, since it uses as much as digits as its factorization.

211608992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9853 (or 9845 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 211608992 is about 14546.7863117597. The cubic root of 211608992 is about 595.9063859093.

The spelling of 211608992 in words is "two hundred eleven million, six hundred eight thousand, nine hundred ninety-two".