133133928 has 16 divisors (see below), whose sum is σ = 332834880. Its totient is φ = 44377968.

The previous prime is 133133863. The next prime is 133133947. The reversal of 133133928 is 829331331.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773600 + ... + 2773647.

It is an arithmetic number, because the mean of its divisors is an integer number (20802180).

Almost surely, 2^133133928 is an apocalyptic number.

It is an amenable number.

133133928 is an abundant number, since it is smaller than the sum of its proper divisors (199700952).

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

133133928 is a wasteful number, since it uses less digits than its factorization.

133133928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547256 (or 5547252 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 133133928 is about 11538.3676488488. The cubic root of 133133928 is about 510.6181508839.

The spelling of 133133928 in words is "one hundred thirty-three million, one hundred thirty-three thousand, nine hundred twenty-eight".