133680316 has 96 divisors (see below), whose sum is σ = 312850944. Its totient is φ = 48787200.

The previous prime is 133680311. The next prime is 133680373. The reversal of 133680316 is 613086331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133680311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633451 + ... + 633661.

It is an arithmetic number, because the mean of its divisors is an integer number (3258864).

Almost surely, 2^133680316 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 133680316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156425472).

133680316 is an abundant number, since it is smaller than the sum of its proper divisors (179170628).

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

133680316 is a wasteful number, since it uses less digits than its factorization.

133680316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 133680316 is about 11562.0204116755. The cubic root of 133680316 is about 511.3157312122.

The spelling of 133680316 in words is "one hundred thirty-three million, six hundred eighty thousand, three hundred sixteen".