228465320 has 32 divisors (see below), whose sum is σ = 514510920. Its totient is φ = 91303680.

The previous prime is 228465299. The next prime is 228465337. The reversal of 228465320 is 23564822.

228465320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 186759556 + 41705764 = 13666^2 + 6458^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62750 + ... + 66290.

Almost surely, 2^228465320 is an apocalyptic number.

228465320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228465320 is an abundant number, since it is smaller than the sum of its proper divisors (286045600).

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

228465320 is a wasteful number, since it uses less digits than its factorization.

228465320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165 (or 5161 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 228465320 is about 15115.0693018590. The cubic root of 228465320 is about 611.3267904523.

The spelling of 228465320 in words is "two hundred twenty-eight million, four hundred sixty-five thousand, three hundred twenty".