212790 has 32 divisors (see below), whose sum is σ = 526176. Its totient is φ = 55040.

The previous prime is 212777. The next prime is 212791. The reversal of 212790 is 97212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212791) by changing a digit.

212790 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 15 ways as a sum of consecutive naturals, for example, 1144 + ... + 1316.

It is an arithmetic number, because the mean of its divisors is an integer number (16443).

2²¹²⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263088).

212790 is an abundant number, since it is smaller than the sum of its proper divisors (313386).

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

212790 is a wasteful number, since it uses less digits than its factorization.

212790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 212790 is about 461.2916647849. The cubic root of 212790 is about 59.7012931492.

The spelling of 212790 in words is "two hundred twelve thousand, seven hundred ninety".