133166828 has 12 divisors (see below), whose sum is σ = 233138472. Its totient is φ = 66555840.

The previous prime is 133166827. The next prime is 133166861. The reversal of 133166828 is 828661331.

133166828 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

133166828 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 133166791 and 133166800.

It is not an unprimeable number, because it can be changed into a prime (133166827) 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, 7151 + ... + 17817.

It is an arithmetic number, because the mean of its divisors is an integer number (19428206).

Almost surely, 2^133166828 is an apocalyptic number.

It is an amenable number.

133166828 is a deficient number, since it is larger than the sum of its proper divisors (99971644).

133166828 is a wasteful number, since it uses less digits than its factorization.

133166828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792 (or 13790 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 133166828 is about 11539.7932390490. The cubic root of 133166828 is about 510.6602086668.

The spelling of 133166828 in words is "one hundred thirty-three million, one hundred sixty-six thousand, eight hundred twenty-eight".