228683281 has 8 divisors (see below), whose sum is σ = 234700704. Its totient is φ = 222686880.

The previous prime is 228683267. The next prime is 228683317. The reversal of 228683281 is 182386822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228683281 - 2¹⁹ = 228158993 is a prime.

It is a super-2 number, since 2×228683281² = 104592086017849922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228683681) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18130 + ... + 28036.

It is an arithmetic number, because the mean of its divisors is an integer number (29337588).

Almost surely, 2^228683281 is an apocalyptic number.

It is an amenable number.

228683281 is a deficient number, since it is larger than the sum of its proper divisors (6017423).

228683281 is an equidigital number, since it uses as much as digits as its factorization.

228683281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511.

The product of its digits is 73728, while the sum is 40.

The square root of 228683281 is about 15122.2776392976. The cubic root of 228683281 is about 611.5211351170.

The spelling of 228683281 in words is "two hundred twenty-eight million, six hundred eighty-three thousand, two hundred eighty-one".