133448528 has 10 divisors (see below), whose sum is σ = 258556554. Its totient is φ = 66724256.

The previous prime is 133448527. The next prime is 133448561. The reversal of 133448528 is 825844331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130599184 + 2849344 = 11428^2 + 1688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133448491 and 133448500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133448527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4170251 + ... + 4170282.

Almost surely, 2^133448528 is an apocalyptic number.

It is an amenable number.

133448528 is a deficient number, since it is larger than the sum of its proper divisors (125108026).

133448528 is an equidigital number, since it uses as much as digits as its factorization.

133448528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340541 (or 8340535 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 133448528 is about 11551.9923822690. The cubic root of 133448528 is about 511.0200371788.

The spelling of 133448528 in words is "one hundred thirty-three million, four hundred forty-eight thousand, five hundred twenty-eight".