133065228 has 12 divisors (see below), whose sum is σ = 310485560. Its totient is φ = 44355072.

The previous prime is 133065221. The next prime is 133065241. The reversal of 133065228 is 822560331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 133065195 and 133065204.

It is not an unprimeable number, because it can be changed into a prime (133065221) 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, 5544373 + ... + 5544396.

Almost surely, 2^133065228 is an apocalyptic number.

It is an amenable number.

133065228 is an abundant number, since it is smaller than the sum of its proper divisors (177420332).

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

133065228 is a wasteful number, since it uses less digits than its factorization.

133065228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088776 (or 11088774 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 133065228 is about 11535.3902404730. The cubic root of 133065228 is about 510.5303057514.

The spelling of 133065228 in words is "one hundred thirty-three million, sixty-five thousand, two hundred twenty-eight".