228328000 has 56 divisors (see below), whose sum is σ = 565474104. Its totient is φ = 91328000.

The previous prime is 228327961. The next prime is 228328019. The reversal of 228328000 is 823822.

It can be written as a sum of positive squares in 4 ways, for example, as 26460736 + 201867264 = 5144^2 + 14208^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 6271 + ... + 22270.

Almost surely, 2^228328000 is an apocalyptic number.

228328000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228328000 is an abundant number, since it is smaller than the sum of its proper divisors (337146104).

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

228328000 is an equidigital number, since it uses as much as digits as its factorization.

228328000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28568 (or 28548 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 228328000 is about 15110.5261324681. The cubic root of 228328000 is about 611.2042857626.

The spelling of 228328000 in words is "two hundred twenty-eight million, three hundred twenty-eight thousand".