228352220 has 12 divisors (see below), whose sum is σ = 479539704. Its totient is φ = 91340880.

The previous prime is 228352207. The next prime is 228352253. The reversal of 228352220 is 22253822.

228352220 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228352220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5708786 + ... + 5708825.

It is an arithmetic number, because the mean of its divisors is an integer number (39961642).

Almost surely, 2^228352220 is an apocalyptic number.

228352220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228352220 is an abundant number, since it is smaller than the sum of its proper divisors (251187484).

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

228352220 is a wasteful number, since it uses less digits than its factorization.

228352220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11417620 (or 11417618 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 228352220 is about 15111.3275392998. The cubic root of 228352220 is about 611.2258962592.

The spelling of 228352220 in words is "two hundred twenty-eight million, three hundred fifty-two thousand, two hundred twenty".