201228 has 24 divisors (see below), whose sum is σ = 482160. Its totient is φ = 65280.

The previous prime is 201211. The next prime is 201233. The reversal of 201228 is 822102.

It is a nialpdrome in base 12.

It is an unprimeable number.

201228 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, 288 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (20090).

2²⁰¹²²⁸ is an apocalyptic number.

It is an amenable number.

201228 is an abundant number, since it is smaller than the sum of its proper divisors (280932).

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

201228 is a wasteful number, since it uses less digits than its factorization.

201228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 201228 is about 448.5844402117. The cubic root of 201228 is about 58.5998004241.

The spelling of 201228 in words is "two hundred one thousand, two hundred twenty-eight".