228878233 has 4 divisors (see below), whose sum is σ = 229105188. Its totient is φ = 228651280.

The previous prime is 228878201. The next prime is 228878249. The reversal of 228878233 is 332878822.

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 85525504 + 143352729 = 9248^2 + 11973^2 .

It is a cyclic number.

It is not a de Polignac number, because 228878233 - 2⁵ = 228878201 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 228878233.

It is not an unprimeable number, because it can be changed into a prime (228878033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111958 + ... + 113983.

It is an arithmetic number, because the mean of its divisors is an integer number (57276297).

Almost surely, 2^228878233 is an apocalyptic number.

It is an amenable number.

228878233 is a deficient number, since it is larger than the sum of its proper divisors (226955).

228878233 is a wasteful number, since it uses less digits than its factorization.

228878233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226954.

The product of its digits is 258048, while the sum is 43.

The square root of 228878233 is about 15128.7221205229. The cubic root of 228878233 is about 611.6948592393.

The spelling of 228878233 in words is "two hundred twenty-eight million, eight hundred seventy-eight thousand, two hundred thirty-three".