228330833 has 4 divisors (see below), whose sum is σ = 236204340. Its totient is φ = 220457328.

The previous prime is 228330797. The next prime is 228330877. The reversal of 228330833 is 338033822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167365969 + 60964864 = 12937^2 + 7808^2 .

It is a cyclic number.

It is not a de Polignac number, because 228330833 - 2⁶ = 228330769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228330833.

It is not an unprimeable number, because it can be changed into a prime (228332833) 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 3 ways as a sum of consecutive naturals, for example, 3936710 + ... + 3936767.

It is an arithmetic number, because the mean of its divisors is an integer number (59051085).

Almost surely, 2^228330833 is an apocalyptic number.

It is an amenable number.

228330833 is a deficient number, since it is larger than the sum of its proper divisors (7873507).

228330833 is an equidigital number, since it uses as much as digits as its factorization.

228330833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873506.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 228330833 is about 15110.6198747768. The cubic root of 228330833 is about 611.2068136093.

The spelling of 228330833 in words is "two hundred twenty-eight million, three hundred thirty thousand, eight hundred thirty-three".