202218228 has 72 divisors (see below), whose sum is σ = 532392000. Its totient is φ = 66375936.

The previous prime is 202218223. The next prime is 202218229. The reversal of 202218228 is 822812202.

202218228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202218223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1016073 + ... + 1016271.

Almost surely, 2^202218228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202218228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266196000).

202218228 is an abundant number, since it is smaller than the sum of its proper divisors (330173772).

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

202218228 is a wasteful number, since it uses less digits than its factorization.

202218228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 202218228 is about 14220.3455654214. The cubic root of 202218228 is about 586.9576493548.

The spelling of 202218228 in words is "two hundred two million, two hundred eighteen thousand, two hundred twenty-eight".