211844 has 12 divisors (see below), whose sum is σ = 373968. Its totient is φ = 105000.

The previous prime is 211817. The next prime is 211859. The reversal of 211844 is 448112.

211844 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

211844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719 + ... + 969.

It is an arithmetic number, because the mean of its divisors is an integer number (31164).

2²¹¹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

211844 is a deficient number, since it is larger than the sum of its proper divisors (162124).

211844 is a wasteful number, since it uses less digits than its factorization.

211844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 211844 is about 460.2651409785. The cubic root of 211844 is about 59.6126904196.

Adding to 211844 its reverse (448112), we get a palindrome (659956).

It can be divided in two parts, 211 and 844, that multiplied together give a square (178084 = 422²).

The spelling of 211844 in words is "two hundred eleven thousand, eight hundred forty-four".