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228281 is a prime number
BaseRepresentation
bin110111101110111001
3102121010212
4313232321
524301111
64520505
71640354
oct675671
9377125
10228281
11146569
12b0135
137cba1
145d29b
154798b
hex37bb9

228281 has 2 divisors, whose sum is σ = 228282. Its totient is φ = 228280.

The previous prime is 228257. The next prime is 228299. The reversal of 228281 is 182822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173056 + 55225 = 416^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 228281 - 210 = 227257 is a prime.

It is a super-2 number, since 2×2282812 = 104224429922, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228281.

It is not a weakly prime, because it can be changed into another prime (228211) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114140 + 114141.

It is an arithmetic number, because the mean of its divisors is an integer number (114141).

2228281 is an apocalyptic number.

It is an amenable number.

228281 is a deficient number, since it is larger than the sum of its proper divisors (1).

228281 is an equidigital number, since it uses as much as digits as its factorization.

228281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 23.

The square root of 228281 is about 477.7876097180. The cubic root of 228281 is about 61.1162345261.

The spelling of 228281 in words is "two hundred twenty-eight thousand, two hundred eighty-one".