133660672 has 32 divisors (see below), whose sum is σ = 267382800. Its totient is φ = 66813952.

The previous prime is 133660661. The next prime is 133660691. The reversal of 133660672 is 276066331.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30729 + ... + 34807.

Almost surely, 2^133660672 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 133660672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133691400).

133660672 is an abundant number, since it is smaller than the sum of its proper divisors (133722128).

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

133660672 is an frugal number, since it uses more digits than its factorization.

133660672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109 (or 4081 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 133660672 is about 11561.1708749590. The cubic root of 133660672 is about 511.2906844475.

The spelling of 133660672 in words is "one hundred thirty-three million, six hundred sixty thousand, six hundred seventy-two".