133024728 has 48 divisors (see below), whose sum is σ = 352742040. Its totient is φ = 41660160.

The previous prime is 133024721. The next prime is 133024741. The reversal of 133024728 is 827420331.

It is a junction number, because it is equal to n+sod(n) for n = 133024695 and 133024704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133024721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232683 + ... + 233253.

Almost surely, 2^133024728 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 133024728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176371020).

133024728 is an abundant number, since it is smaller than the sum of its proper divisors (219717312).

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

133024728 is an equidigital number, since it uses as much as digits as its factorization.

133024728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 133024728 is about 11533.6346396095. The cubic root of 133024728 is about 510.4785051527.

The spelling of 133024728 in words is "one hundred thirty-three million, twenty-four thousand, seven hundred twenty-eight".