228220180 has 24 divisors (see below), whose sum is σ = 479842272. Its totient is φ = 91177632.

The previous prime is 228220163. The next prime is 228220183. The reversal of 228220180 is 81022822.

228220180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228220183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11199 + ... + 24121.

It is an arithmetic number, because the mean of its divisors is an integer number (19993428).

Almost surely, 2^228220180 is an apocalyptic number.

228220180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228220180 is an abundant number, since it is smaller than the sum of its proper divisors (251622092).

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

228220180 is a wasteful number, since it uses less digits than its factorization.

228220180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815 (or 13813 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 228220180 is about 15106.9579995444. The cubic root of 228220180 is about 611.1080639211.

The spelling of 228220180 in words is "two hundred twenty-eight million, two hundred twenty thousand, one hundred eighty".