212274 has 16 divisors (see below), whose sum is σ = 471840. Its totient is φ = 70740.

The previous prime is 212243. The next prime is 212281. The reversal of 212274 is 472212.

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

It is a Curzon number.

It is an unprimeable number.

212274 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 7 ways as a sum of consecutive naturals, for example, 1912 + ... + 2019.

It is an arithmetic number, because the mean of its divisors is an integer number (29490).

2²¹²²⁷⁴ is an apocalyptic number.

212274 is an abundant number, since it is smaller than the sum of its proper divisors (259566).

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

212274 is a wasteful number, since it uses less digits than its factorization.

212274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 3936 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 212274 is about 460.7320262365. The cubic root of 212274 is about 59.6529970176.

Adding to 212274 its reverse (472212), we get a palindrome (684486).

The spelling of 212274 in words is "two hundred twelve thousand, two hundred seventy-four", and thus it is an iban number.