133356828 has 48 divisors (see below), whose sum is σ = 340631424. Its totient is φ = 40271040.

The previous prime is 133356787. The next prime is 133356833. The reversal of 133356828 is 828653331.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40251 + ... + 43437.

It is an arithmetic number, because the mean of its divisors is an integer number (7096488).

Almost surely, 2^133356828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133356828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170315712).

133356828 is an abundant number, since it is smaller than the sum of its proper divisors (207274596).

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

133356828 is a wasteful number, since it uses less digits than its factorization.

133356828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522 (or 3520 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 133356828 is about 11548.0226878890. The cubic root of 133356828 is about 510.9029601412.

The spelling of 133356828 in words is "one hundred thirty-three million, three hundred fifty-six thousand, eight hundred twenty-eight".