228833281 has 2 divisors, whose sum is σ = 228833282. Its totient is φ = 228833280.

The previous prime is 228833273. The next prime is 228833291. The reversal of 228833281 is 182338822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 109914256 = 10905^2 + 10484^2 .

It is a cyclic number.

It is not a de Polignac number, because 228833281 - 2³ = 228833273 is a prime.

It is a super-2 number, since 2×228833281² = 104729340986449922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228833281.

It is not a weakly prime, because it can be changed into another prime (228833201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114416640 + 114416641.

It is an arithmetic number, because the mean of its divisors is an integer number (114416641).

Almost surely, 2^228833281 is an apocalyptic number.

It is an amenable number.

228833281 is a deficient number, since it is larger than the sum of its proper divisors (1).

228833281 is an equidigital number, since it uses as much as digits as its factorization.

228833281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 37.

The square root of 228833281 is about 15127.2363966456. The cubic root of 228833281 is about 611.6548107133.

The spelling of 228833281 in words is "two hundred twenty-eight million, eight hundred thirty-three thousand, two hundred eighty-one".