133489568 has 24 divisors (see below), whose sum is σ = 264337668. Its totient is φ = 66356224.

The previous prime is 133489567. The next prime is 133489583. The reversal of 133489568 is 865984331.

It can be written as a sum of positive squares in 2 ways, for example, as 119858704 + 13630864 = 10948^2 + 3692^2 .

It is not an unprimeable number, because it can be changed into a prime (133489567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521 + ... + 17592.

Almost surely, 2^133489568 is an apocalyptic number.

It is an amenable number.

133489568 is a deficient number, since it is larger than the sum of its proper divisors (130848100).

133489568 is a wasteful number, since it uses less digits than its factorization.

133489568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24296 (or 24288 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 133489568 is about 11553.7685626812. The cubic root of 133489568 is about 511.0724172066.

The spelling of 133489568 in words is "one hundred thirty-three million, four hundred eighty-nine thousand, five hundred sixty-eight".