212704 has 36 divisors (see below), whose sum is σ = 464184. Its totient is φ = 95744.

The previous prime is 212701. The next prime is 212777. The reversal of 212704 is 407212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9237 + ... + 9259.

It is an arithmetic number, because the mean of its divisors is an integer number (12894).

2²¹²⁷⁰⁴ 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 212704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232092).

212704 is an abundant number, since it is smaller than the sum of its proper divisors (251480).

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

212704 is a wasteful number, since it uses less digits than its factorization.

212704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 212704 is about 461.1984388525. The cubic root of 212704 is about 59.6932492201.

Adding to 212704 its reverse (407212), we get a palindrome (619916).

The spelling of 212704 in words is "two hundred twelve thousand, seven hundred four", and thus it is an iban number.