133749568 has 28 divisors (see below), whose sum is σ = 265797792. Its totient is φ = 66776960.

The previous prime is 133749563. The next prime is 133749589. The reversal of 133749568 is 865947331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133749563) 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, 64971 + ... + 66997.

Almost surely, 2^133749568 is an apocalyptic number.

It is an amenable number.

133749568 is a deficient number, since it is larger than the sum of its proper divisors (132048224).

133749568 is a wasteful number, since it uses less digits than its factorization.

133749568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070 (or 3060 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 133749568 is about 11565.0148292166. The cubic root of 133749568 is about 511.4040102879.

It can be divided in two parts, 1337 and 49568, that added together give a palindrome (50905).

The spelling of 133749568 in words is "one hundred thirty-three million, seven hundred forty-nine thousand, five hundred sixty-eight".