133721484 has 48 divisors (see below), whose sum is σ = 339520608. Its totient is φ = 40716288.

The previous prime is 133721479. The next prime is 133721509. The reversal of 133721484 is 484127331.

133721484 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10714 + ... + 19550.

It is an arithmetic number, because the mean of its divisors is an integer number (7073346).

Almost surely, 2^133721484 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 133721484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169760304).

133721484 is an abundant number, since it is smaller than the sum of its proper divisors (205799124).

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

133721484 is a wasteful number, since it uses less digits than its factorization.

133721484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8954 (or 8952 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 133721484 is about 11563.8005863124. The cubic root of 133721484 is about 511.3682138469.

The spelling of 133721484 in words is "one hundred thirty-three million, seven hundred twenty-one thousand, four hundred eighty-four".