211938 has 8 divisors (see below), whose sum is σ = 423888. Its totient is φ = 70644.

The previous prime is 211933. The next prime is 211943. The reversal of 211938 is 839112.

211938 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211933) and next prime (211943).

It is a sphenic number, since it is the product of 3 distinct primes.

211938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (211931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17656 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (52986).

2²¹¹⁹³⁸ is an apocalyptic number.

211938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211938 is a wasteful number, since it uses less digits than its factorization.

211938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35328.

The product of its digits is 432, while the sum is 24.

The square root of 211938 is about 460.3672447080. The cubic root of 211938 is about 59.6215062846.

The spelling of 211938 in words is "two hundred eleven thousand, nine hundred thirty-eight".