228208930 has 24 divisors (see below), whose sum is σ = 417688596. Its totient is φ = 89772480.

The previous prime is 228208913. The next prime is 228208931. The reversal of 228208930 is 39802822.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 36857041 + 191351889 = 6071^2 + 13833^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (228208931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34144 + ... + 40276.

Almost surely, 2^228208930 is an apocalyptic number.

228208930 is a deficient number, since it is larger than the sum of its proper divisors (189479666).

228208930 is an equidigital number, since it uses as much as digits as its factorization.

228208930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262 (or 6201 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 228208930 is about 15106.5856499740. The cubic root of 228208930 is about 611.0980223337.

The spelling of 228208930 in words is "two hundred twenty-eight million, two hundred eight thousand, nine hundred thirty".