256212 has 36 divisors (see below), whose sum is σ = 707616. Its totient is φ = 77520.

The previous prime is 256211. The next prime is 256219. The reversal of 256212 is 212652.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256212.

It is not an unprimeable number, because it can be changed into a prime (256211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2²⁵⁶²¹² is an apocalyptic number.

256212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353808).

256212 is an abundant number, since it is smaller than the sum of its proper divisors (451404).

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

256212 is a wasteful number, since it uses less digits than its factorization.

256212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 663 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 256212 is about 506.1738831666. The cubic root of 256212 is about 63.5135647959.

Adding to 256212 its reverse (212652), we get a palindrome (468864).

The spelling of 256212 in words is "two hundred fifty-six thousand, two hundred twelve".