211090228 has 48 divisors (see below), whose sum is σ = 408481920. Its totient is φ = 95001984.

The previous prime is 211090223. The next prime is 211090273. The reversal of 211090228 is 822090112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211090223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344050 + ... + 344662.

It is an arithmetic number, because the mean of its divisors is an integer number (8510040).

Almost surely, 2^211090228 is an apocalyptic number.

It is an amenable number.

211090228 is a deficient number, since it is larger than the sum of its proper divisors (197391692).

211090228 is a wasteful number, since it uses less digits than its factorization.

211090228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 211090228 is about 14528.9444902236. The cubic root of 211090228 is about 595.4190283244.

The spelling of 211090228 in words is "two hundred eleven million, ninety thousand, two hundred twenty-eight".