228168220 has 48 divisors (see below), whose sum is σ = 579821760. Its totient is φ = 73626624.

The previous prime is 228168217. The next prime is 228168247. The reversal of 228168220 is 22861822.

228168220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45555 + ... + 50314.

It is an arithmetic number, because the mean of its divisors is an integer number (12079620).

Almost surely, 2^228168220 is an apocalyptic number.

228168220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228168220 is an abundant number, since it is smaller than the sum of its proper divisors (351653540).

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

228168220 is a wasteful number, since it uses less digits than its factorization.

228168220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95902 (or 95900 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 228168220 is about 15105.2381642925. The cubic root of 228168220 is about 611.0616824178.

The spelling of 228168220 in words is "two hundred twenty-eight million, one hundred sixty-eight thousand, two hundred twenty".