211878 has 24 divisors (see below), whose sum is σ = 468000. Its totient is φ = 69264.

The previous prime is 211877. The next prime is 211879. The reversal of 211878 is 878112.

211878 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 (211877) and next prime (211879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211873) 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 11 ways as a sum of consecutive naturals, for example, 1348 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (19500).

2²¹¹⁸⁷⁸ is an apocalyptic number.

211878 is an abundant number, since it is smaller than the sum of its proper divisors (256122).

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

211878 is a wasteful number, since it uses less digits than its factorization.

211878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 233 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 211878 is about 460.3020747292. The cubic root of 211878 is about 59.6158794377.

It can be divided in two parts, 211 and 878, that added together give a square (1089 = 33²).

The spelling of 211878 in words is "two hundred eleven thousand, eight hundred seventy-eight".