228133276 has 12 divisors (see below), whose sum is σ = 456266608. Its totient is φ = 97771392.

The previous prime is 228133267. The next prime is 228133303. The reversal of 228133276 is 672331822.

228133276 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 4073781 + ... + 4073836.

Almost surely, 2^228133276 is an apocalyptic number.

It is an amenable number.

228133276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228133276 is a wasteful number, since it uses less digits than its factorization.

228133276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147628 (or 8147626 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 228133276 is about 15104.0814351618. The cubic root of 228133276 is about 611.0304860932.

The spelling of 228133276 in words is "two hundred twenty-eight million, one hundred thirty-three thousand, two hundred seventy-six".