133075228 has 48 divisors (see below), whose sum is σ = 276990336. Its totient is φ = 55143360.

The previous prime is 133075213. The next prime is 133075231. The reversal of 133075228 is 822570331.

It is a self number, because there is not a number n which added to its sum of digits gives 133075228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46075 + ... + 48877.

It is an arithmetic number, because the mean of its divisors is an integer number (5770632).

Almost surely, 2^133075228 is an apocalyptic number.

It is an amenable number.

133075228 is an abundant number, since it is smaller than the sum of its proper divisors (143915108).

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

133075228 is a wasteful number, since it uses less digits than its factorization.

133075228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914 (or 2912 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 133075228 is about 11535.8236810381. The cubic root of 133075228 is about 510.5430944047.

The spelling of 133075228 in words is "one hundred thirty-three million, seventy-five thousand, two hundred twenty-eight".