133299712 has 80 divisors (see below), whose sum is σ = 327916512. Its totient is φ = 52715520.

The previous prime is 133299667. The next prime is 133299713. The reversal of 133299712 is 217992331.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133299713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45162 + ... + 48022.

Almost surely, 2^133299712 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 133299712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163958256).

133299712 is an abundant number, since it is smaller than the sum of its proper divisors (194616800).

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

133299712 is an equidigital number, since it uses as much as digits as its factorization.

133299712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899 (or 2883 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 133299712 is about 11545.5494455656. The cubic root of 133299712 is about 510.8300107445.

The spelling of 133299712 in words is "one hundred thirty-three million, two hundred ninety-nine thousand, seven hundred twelve".