211888968 has 48 divisors (see below), whose sum is σ = 547421040. Its totient is φ = 68343840.

The previous prime is 211888939. The next prime is 211888979. The reversal of 211888968 is 869888112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211888968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18471 + ... + 27657.

It is an arithmetic number, because the mean of its divisors is an integer number (11404605).

Almost surely, 2^211888968 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 211888968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273710520).

211888968 is an abundant number, since it is smaller than the sum of its proper divisors (335532072).

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

211888968 is a wasteful number, since it uses less digits than its factorization.

211888968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258 (or 9223 counting only the distinct ones).

The product of its digits is 442368, while the sum is 51.

The square root of 211888968 is about 14556.4064246640. The cubic root of 211888968 is about 596.1690810466.

The spelling of 211888968 in words is "two hundred eleven million, eight hundred eighty-eight thousand, nine hundred sixty-eight".