133664752 has 40 divisors (see below), whose sum is σ = 282749264. Its totient is φ = 60839424.

The previous prime is 133664743. The next prime is 133664767. The reversal of 133664752 is 257466331.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10783 + ... + 19585.

Almost surely, 2^133664752 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 133664752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141374632).

133664752 is an abundant number, since it is smaller than the sum of its proper divisors (149084512).

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

133664752 is a wasteful number, since it uses less digits than its factorization.

133664752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897 (or 8891 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 133664752 is about 11561.3473263284. The cubic root of 133664752 is about 511.2958867875.

The spelling of 133664752 in words is "one hundred thirty-three million, six hundred sixty-four thousand, seven hundred fifty-two".