211028 has 6 divisors (see below), whose sum is σ = 369306. Its totient is φ = 105512.

The previous prime is 211007. The next prime is 211039. The reversal of 211028 is 820112.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 6724 = 452^2 + 82^2 .

It is a congruent number.

It is an unprimeable number.

211028 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 as a sum of consecutive naturals, namely, 26375 + ... + 26382.

It is an arithmetic number, because the mean of its divisors is an integer number (61551).

2²¹¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

211028 is a deficient number, since it is larger than the sum of its proper divisors (158278).

211028 is a wasteful number, since it uses less digits than its factorization.

211028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52761 (or 52759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 211028 is about 459.3778401273. The cubic root of 211028 is about 59.5360514047.

The spelling of 211028 in words is "two hundred eleven thousand, twenty-eight".